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My two cents,<br>
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1) while the standard might not guarantee proper mapping for non trivially copyable types, we should determine under which condition we can guarantee the expected behaviour and not issue a warning expect we have to. The warning should then inform the user why
we couldn't and how it can be resolved.<br>
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Could anyone open a bug for this as well?<br>
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2) atomics should "work". I'll look into this with the caveat that the performance is hardware dependent. as Alexey mentioned, if the hardware doesn't provide direct support we'll need to emulate them which might be even more costly. Nevertheless, it should
work and not error out.<br>
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Cheers,<br>
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Johannes<br>
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--<br>
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written from my phone</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Alexey Bataev <Alexey.Bataev@ibm.com><br>
<b>Sent:</b> Thursday, December 5, 2019 5:30:23 PM<br>
<b>To:</b> Jeffrey Kelling <j.kelling@hzdr.de><br>
<b>Cc:</b> Narayanaswamy, Ravi <ravi.narayanaswamy@intel.com>; Sunita Chandrasekaran <schandra@udel.edu>; openmp-dev@lists.llvm.org <openmp-dev@lists.llvm.org>; Guido Juckeland <g.juckeland@hzdr.de>; Doerfert, Johannes <jdoerfert@anl.gov><br>
<b>Subject:</b> RE: Clang9 warning and compiler error with atomics</font>
<div> </div>
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<div dir="auto">There is std::is_trivially_copyable trait, you can check if your types are actually trivially copyable.
<div><br>
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<div>std::is_trivially_copyable<type>::value is true if type is trivially copyable, false otherwise.</div>
<div><br>
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<div>Here is the definition of trivially copyable types <br>
<br>
</div>
<div><a href="https://en.cppreference.com/w/cpp/named_req/TriviallyCopyable">https://en.cppreference.com/w/cpp/named_req/TriviallyCopyable</a></div>
<div><br>
</div>
<div>Compiler relies on the standard here.</div>
<div><br>
<div dir="ltr">Best regards,
<div>Alexey Bataev</div>
</div>
<div dir="ltr"><br>
<blockquote type="cite">5 дек. 2019 г., в 18:03, Jeffrey Kelling <j.kelling@hzdr.de> написал(а):<br>
<br>
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<div dir="ltr"><span>Hello Alexey.</span><br>
<span></span><br>
<blockquote type="cite"><span>The warning is definitely fired only for non-trivially copyable</span><br>
</blockquote>
<blockquote type="cite"><span>types. But for each of them.</span><br>
</blockquote>
<span>I am not completely sure what the definition of non-trivially copyable is, but
</span><br>
<span>I would not expect the following:</span><br>
<span></span><br>
<span>* It is giving me warning for std::tuple:</span><br>
<span>warning: Non-trivial type 'std::__1::tuple<unsigned int *, unsigned int *, </span>
<br>
<span>unsigned int *, unsigned long>' is mapped, only trivial types are guaranteed
</span><br>
<span>to be mapped correctly [-Wopenmp-target]</span><br>
<span></span><br>
<span>Tuple has a defaulted copy constructor according to the standard. However, the
</span><br>
<span>example above does have pointers, so it may still warrant a warning, but it
</span><br>
<span>would be nice if I could turn that one off separately.</span><br>
<span></span><br>
<span>* I also get a waring on another type:</span><br>
<span>warning: Non-trivial type 'const </span><br>
<span>alpaka::vec::Vec<std::__1::integral_constant<unsigned long, 1>, unsigned </span>
<br>
<span>long>' is mapped, only trivial types are guaranteed to be mapped correctly [-</span><br>
<span>Wopenmp-target]</span><br>
<span>This one also has default move and copy constructors. It only has one data </span>
<br>
<span>member:</span><br>
<span>TVal m_data[TDim::value == 0u ? 1u : TDim::value]; // TVal = unsigned long</span><br>
<span></span><br>
<span>While I do agree, that this type is anything bus trivial as a whole, it still
</span><br>
<span>should not warrant this warning.</span><br>
<span></span><br>
<blockquote type="cite"><span>What I can do is to put this warning into a</span><br>
</blockquote>
<blockquote type="cite"><span>different warning group, like -Wopenmp-mapping or something like this.
</span><br>
</blockquote>
<span>This would help a lot already, thanks.</span><br>
<span></span><br>
<span>Best Regards,</span><br>
<span></span><br>
<span>Jeffrey</span><br>
<span></span><br>
<blockquote type="cite"><span>Best regards,</span><br>
</blockquote>
<blockquote type="cite"><span>Alexey Bataev</span><br>
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<blockquote type="cite"><span></span><br>
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<blockquote type="cite"><span></span><br>
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<blockquote type="cite"><span>5 дек. 2019 г., в 16:49, Jeffrey Kelling <j.kelling@hzdr.de> написал(а):</span><br>
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<blockquote type="cite"><span>Hello Alexey.</span><br>
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<blockquote type="cite"><span>1. What is the preferrable way of fixing the problem with the warning? I</span><br>
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<blockquote type="cite"><span>don't think we should throw it away because it may help developers to</span><br>
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<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>identify possible prpblems with the offloading.</span><br>
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<blockquote type="cite"><span>I agree, that the warning may be important, which is why it would be nice</span><br>
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<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>it</span><br>
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<blockquote type="cite"><span></span><br>
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<blockquote type="cite"><span>it would not be spammed so much. I would suggest to not show the warning</span><br>
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<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>if</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
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<blockquote type="cite"><span>the type is trivially copyable.</span><br>
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<blockquote type="cite"><span>I some cases a warning might be useful if the type, even if trivially</span><br>
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<blockquote type="cite">
<blockquote type="cite"><span>copyable, has member of pointer of reference types. However, there should</span><br>
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</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>be</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>separate flag to toggle this one (at least a no- flag), because I am</span><br>
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</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>intentionally pushing pointer to device memory into the target region</span><br>
</blockquote>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>this way</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>and thus the spam would continue. Maybe, if there is a reference member</span><br>
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</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>the</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
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<blockquote type="cite"><span>warning would always make sense, because the reference can maybe only</span><br>
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<blockquote type="cite"><span></span><br>
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<blockquote type="cite"><span>refer to</span><br>
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<blockquote type="cite"><span>something on the host.</span><br>
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<blockquote type="cite"><span>2. It is known problem and</span><br>
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<blockquote type="cite">
<blockquote type="cite"><span>there is no quick way to fix it. Some of the atomic constructs are not</span><br>
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<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>supported by the NVPTX backend. Possible solution is to use critical</span><br>
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<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>sections or, maybe, intrinsics/builtins directly.</span><br>
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<blockquote type="cite"><span></span><br>
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<blockquote type="cite"><span>This is a good thing to note, thanks.</span><br>
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<blockquote type="cite"><span>Best Regards,</span><br>
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<blockquote type="cite"><span>Jeffrey Kelling</span><br>
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<blockquote type="cite"><span>Best regards,</span><br>
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<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>Alexey Bataev</span><br>
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<blockquote type="cite"><span>5 дек. 2019 г., в 15:27, Narayanaswamy, Ravi</span><br>
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<blockquote type="cite"><span><ravi.narayanaswamy@intel.com> написал(а):</span><br>
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<blockquote type="cite"><span>+Alexey</span><br>
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<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>From: Sunita Chandrasekaran [mailto:schandra@udel.edu]</span><br>
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<blockquote type="cite"><span>Sent: Wednesday, December 4, 2019 7:02 PM</span><br>
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<blockquote type="cite">
<blockquote type="cite"><span>To: openmp-dev@lists.llvm.org</span><br>
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<blockquote type="cite"><span>Cc: Jeffrey Kelling <j.kelling@hzdr.de>; Guido Juckeland</span><br>
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<blockquote type="cite"><span><g.juckeland@hzdr.de>; Narayanaswamy, Ravi</span><br>
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<blockquote type="cite"><span><ravi.narayanaswamy@intel.com>; Doerfert, Johannes Rudolf</span><br>
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<blockquote type="cite"><span><jdoerfert@anl.gov> Subject: Clang9 warning and compiler error with</span><br>
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<blockquote type="cite"><span>atomics</span><br>
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<blockquote type="cite"><span>Hello Everyone</span><br>
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<blockquote type="cite"><span>I guess I have not posted to this alias in the near past, but I</span><br>
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<blockquote type="cite"><span>probably</span><br>
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<blockquote type="cite"><span>*can* ! Guess we will find out :-)</span><br>
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<blockquote type="cite"><span>(copying Ravi and Johannes just in case my mail doesn't get thru the</span><br>
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<blockquote type="cite"><span>mailing list..please let me know)</span><br>
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<blockquote type="cite"><span>Some of us are working on an application PIConGPU which is also one of</span><br>
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<blockquote type="cite"><span>the</span><br>
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<blockquote type="cite"><span>8 ORNL CAAR projects for Frontier system. There are 2 issues pointed</span><br>
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<blockquote type="cite"><span>out</span><br>
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<blockquote type="cite"><span>by the developer Jeffrey Kelling (copied here) while he is running</span><br>
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<blockquote type="cite"><span>Alpaka</span><br>
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<blockquote type="cite"><span>tests with LLVM.</span><br>
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<blockquote type="cite">
<blockquote type="cite"><span>1. Clang9 is spamming the a pointless warning:</span><br>
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<blockquote type="cite"><span>warning: Non-trivial type 'const</span><br>
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<blockquote type="cite"><span>alpaka::vec::Vec<std::__1::integral_constant<unsigned long, 1>,</span><br>
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</blockquote>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>unsigned</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>long>' is mapped, only trivial types are guara</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>nteed to be mapped correctly [-Wopenmp-target]</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>While we are aware that the warning will appear, we need to turn off</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>-werror because of this, may miss more important warnings due to the</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>spam. Jeff also does not want to turn of -Wopenmp-target, because these</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>should be the most interesting warnings. It would be nice, if this one</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>could be fixed.</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>2. Jeff also just encountered an internal compiler error with atomics</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>and</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>the NVPTX backend, and created a bug report:</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>https://bugs.llvm.org/show_bug.cgi?id=44219</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>Addressing these issues for CAAR is very time critical and that led me</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>to</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>send an email to this mailing list to get some quick advice/insights</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>into</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>both these issues.</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>Thank you very much for your time!!</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>Cheers</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>sunita</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>----------------------------------------</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>Sunita Chandrasekaran</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>Asst. Prof. Computer and Information Sciences</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>Affiliated, Center for Bioinformatics and Computational Biology</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>Affiliated, Data Science Institute</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>University of Delaware</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>430 Smith Hall, Newark, DE, USA</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>p: 302-831-2714 e: schandra@udel.edu</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>----------------------------------------</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>Adjunct Prof. Dept. of Computer Science</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>University of Houston, TX</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>----------------------------------------</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>CRPL</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>Research Group:</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>http://crpl.cis.udel.edu/</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>t: https://twitter.com/sunitachandra29</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite"><span>w: https://www.eecis.udel.edu/~schandra/</span><br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>--</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>Dr. Jeffrey Kelling</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>Computational Science Group (FWCC)</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>Department of Information Services and Computing (FWC)</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>Building 613, Room 260</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>Phone: +49 - 351 - 260 3680</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>Helmholtz-Zentrum Dresden-Rossendorf e.V.</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>http://www.hzdr.de</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>Vorstand: Prof. Dr. Dr. h. c. Roland Sauerbrey</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>Vereinsregister: VR 1693 beim Amtsgericht Dresden</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span><smime.p7s></span><br>
</blockquote>
</blockquote>
<span></span><br>
<span></span><br>
<span>-- </span><br>
<span>Dr. Jeffrey Kelling</span><br>
<span></span><br>
<span>Computational Science Group (FWCC)</span><br>
<span>Department of Information Services and Computing (FWC)</span><br>
<span>Building 613, Room 260</span><br>
<span>Phone: +49 - 351 - 260 3680</span><br>
<span></span><br>
<span>Helmholtz-Zentrum Dresden-Rossendorf e.V.</span><br>
<span>http://www.hzdr.de</span><br>
<span></span><br>
<span>Vorstand: Prof. Dr. Dr. h. c. Roland Sauerbrey</span><br>
<span>Vereinsregister: VR 1693 beim Amtsgericht Dresden
<div><smime.p7s></div>
</span></div>
</blockquote>
</div>
<br>
</div>
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