what is the performance of current backport branch

[XiaPZ]

I am trying to run some spec2006 benchmarks on xiangshan GEM5, currently I tried hmmer on backport branch, the weighted IPC is around 2.5 (spec2006 score is around 5.6 / GHz), that is far from 11 / GHz, so I am wondering what is the performance of current backport branch? Thanks

[shinezyy]

Can you give more details on how you "tried" hmmer and how you relate IPC of hmmer agaist spec2006 score?

[XiaPZ]

Sure, hmmer is built with gcc 11, O3 option, with rv64imafdc, score is calculated as ref_time / ((1 / IPC) num_insts / 10^9 ). For hmmer, there ref1 and ref2, so the score is ref_time / ((((1/IPC_ref1) num_insts_ref1) + (1/IPC_ref2) * num_insts_ref2) / 10^9).

[XiaPZ]

checkpoint is collected with NEMU, and run with util/warmup_scripts/simple_gem5.sh

[shinezyy]

hmmer's performance is sensitive to B-extension, try gcc 12 with rv64gc_zba_zbb_zbc_zbs

[XiaPZ]

After recompiled hmmer with B-extension, now the IPC is around 4.9, you are right, hmmer is sensitive to B-extension.

[XiaPZ]

Thanks for your help @shinezyy