[llvm-dev] ?==?utf-8?q? llvm-exegesis

Luka Ercegovcevic via llvm-dev
Wed, 15 Aug 2018 17:10:55 -0000

Hi Simon,

I updated my OS to Ubuntu 18.04.1, and now it works fine. I'm not sure what
was the issue on Ubuntu 16.04.10

Thanks,
Luka

-------- Original Message --------
Subject: Re: [llvm-dev] llvm-exegesis
Date: Tuesday, August 14, 2018 21:19 CEST
From: Simon Pilgrim <llvm-dev at redking.me.uk>
To: llvm-dev at lists.llvm.org
CC: Luka Ercegovcevic <Luka.Ercegovcevic at rt-rk.com>, Petar Jovanovic
<Petar.Jovanovic at rt-rk.com>
References: <3315-5b72f500-3-172feea0 at 222762487>



Hi Luka,
Which CPU and OS are you running? Most linux distros seem to have an old version
of libpfm - I've had more luck (better CPU support) by using the trunk
version from https://sourceforge.net/p/perfmon2/libpfm4/ci/master/tree/
Also, are running the tool with sudo?Simon.
 On 14/08/2018 16:28, Luka Ercegovcevic via llvm-dev wrote:Hi everyone,

Can someone help me with running llvm-exegesis tool on x86_64? I saw that I need
libpfm library, but I'm still getting segmentation fault when I try to run
the tool. Is there anything else I need to do (build llvm on some specific way)
?
This is how I tried to run this tool: llvm-exegesis -mode=latency
-opcode-name=ADD64rr

Thanks,
Luka  _______________________________________________
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