Hi Oscar,
Yes, I agree with Simpoints its possible to simulate SPEC benchmarks but the
problems is, how do you generate BBV file for the simpoint tool. I tried to
generate this BBV file using Gem5 (for perlbench) and took like 3 days. Did I
do something wrong?
Asif
On Wednesday, June 28, 2017, 3:01:43 PM GMT+2, Oscar Rosell
<[email protected]> wrote:
Hi,
Just so that you have a reference, we usually simulate SimPoints of 100M
instructions (with 10M extra warmup instructions) and on a single core
O3+L1+L2 model they take between 30 minutes and 75 minutes.
Regards,
Oscar
On 28/06/17 10:47, Stine, James wrote:
> Hi All,
>
> I am sorry to bother everyone. I am trying to gauge performance and would
> love some feedback on run-time performance. My main impetus for this Email
> is due to limited information I could find and just wanted to get some
> feedback on if there was some issues related to this topic. I apologize in
> advance if I missed something specific about this question.
>
> I did some tests on the queens benchmark as well as some others and my run
> times seem to take a long time. 16X grids within queens.c (e.g., queens 16)
> seem to run about 17 hours using AtomicMemory access with caching. The
> ASPLOS-13 tutorial seems to have very small numCycles, so not sure that is
> accurate for “-o 16” on queens.c. Eventually, I would love SPEC, but I am
> quite worried if queens.c takes forever, how can I even manage to get SPEC
> through. I also tried some other benchmarks like Matrix Multiplications,
> but some of them take just as long. However, queens does take a while to
> run, which I know is typical due to its intense computation mix. My x86
> cycle counts (statically compiled with -O3 and loop unrolling) were:
> 60,055,907,458 on multi-core Intel extreme processors - again, I might have
> not run something correctly.
>
> If anyone can possibly share their tips/tricks - especially for eventual
> running of SPEC, it would be great. Does anyone do anything to maximize
> performance? Even the smallest of tips would be helpful. Perhaps, I am
> running gem5 with the wrong settings. Or, perhaps, the settings are correct
> and this is a normal set of run times. Anyways, I appreciate any help and
> also appreciate the wonder of gem5. Take care.
>
> All my best,
>
> James
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