<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [llvm-exegesis] PfmIssueCounter for uops in amdfam15h"
href="https://bugs.llvm.org/show_bug.cgi?id=38951">38951</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[llvm-exegesis] PfmIssueCounter for uops in amdfam15h
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>lebedev.ri@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=20882" name="attach_20882" title="uops measurements">attachment 20882</a> <a href="attachment.cgi?id=20882&action=edit" title="uops measurements">[details]</a></span>
uops measurements
On amdfam15h (BdVer2, Piledriver), the uops measurement is problematic.
My current config:
let SchedModel = BdVer2Model in {
def PdCycleCounter : PfmCycleCounter<"cpu_clk_unhalted">;
def PdEXCounter : PfmIssueCounter<PdEX, // Technically, PdEX
["retired_uops"]>;
def PdFPU0Counter : PfmIssueCounter<PdFPU0,
["dispatched_fpu_ops:ops_pipe0",
"dispatched_fpu_ops:ops_dual_pipe0"]>;
def PdFPU1Counter : PfmIssueCounter<PdFPU1,
["dispatched_fpu_ops:ops_pipe1",
"dispatched_fpu_ops:ops_dual_pipe1"]>;
def PdFPU2Counter : PfmIssueCounter<PdFPU2,
["dispatched_fpu_ops:ops_pipe2",
"dispatched_fpu_ops:ops_dual_pipe2"]>;
def PdFPU3Counter : PfmIssueCounter<PdFPU3,
["dispatched_fpu_ops:ops_pipe3",
"dispatched_fpu_ops:ops_dual_pipe3"]>;
// NOTE: it would seem, there are not uops counters for any other pipes.
}
The fpu stuff seems to work.
But retired_uops is not specific to the EX/AGU units.
And i don't see any other, EX/AGU-specific ones.
It counts all the uops, to all the units. The dual-issue uop is counted as one
uop.
So it would be more correct to define this as:
PdUOpsTotal = retired_uops
PdEXCounter = PdUOpsTotal - PdFPU0Counter - PdFPU1Counter - PdFPU2Counter -
PdFPU3Counter
I think?
I don't have any ideas, i just though i'd bring this up.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>