[cfe-dev] Hardware for building LLVM+Clang in 10-20 minutes
criswell at illinois.edu
Fri Mar 29 08:16:22 PDT 2013
On 3/29/13 9:48 AM, Anton Yartsev wrote:
> Hi all!
> I have finally decided to upgrade from my old Core 2 Duo E8500, 6GB
> DDR2 400 MHz.
> Currently the full building+testing of llvm lasts for hours (slightly
> faster with VS2008, slightly slower with MinGW) and makes everything lag.
By "test," do you mean the lit tests in llvm/test or a full run of the
test suite in the test-suite project?
> Ideally would be happy to perform build+test for about 10-20 minutes,
> as some fast builders do, and have no lags with other useful
> applications, such as browsers and Acrobat, during building/testing.
> Please can anybody advise me an appropriate hardware? Or just tell,
> what hardware the fast buildbots are running (specifically
> clang-native-mingw64-win7, clang-x86_64-ubuntu-gdb-75 and
Just to throw out some rough numbers, we have a 128 GB, 32 core
machine. The processors are Intel(R) Xeon(R) CPU E7- 8837 @ 2.67GHz.
Doing a make -j20 on LLVM+Clang from scratch takes about 4 minutes of
wall time and about 50 minutes of user+system CPU time. I can't seem to
run the tests in llvm/test, so I can't time that.
-- John T.
More information about the cfe-dev