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Date: Thu, 01 Mar 2012 18:47:32 +0100
From: Javier González del Tánago Liberal
<jtanago@...mun.ls.fi.upm.es>
To: john-users@...ts.openwall.com
Subject: Best performance MPI vs OMP
Hi!
I've been trying John and I noticed a big difference in performance
between MPI and OMP (LM, NTLM overall). These are the results:
- DES
OMP
Benchmarking: Traditional DES [128/128 BS SSE2-16]... (48xOMP) DONE
Many salts: 47087K c/s real, 982834 c/s virtual
Only one salt: 21921K c/s real, 457370 c/s virtual
MPI
Benchmarking: Traditional DES [128/128 BS SSE2-16]... (48xMPI) DONE
Many salts: 50263K c/s real, 50263K c/s virtual
Only one salt: 48422K c/s real, 48422K c/s virtual
- LM
OMP
Benchmarking: LM DES [128/128 BS SSE2-16]... (48xOMP) DONE
Raw: 39714K c/s real, 828600 c/s virtual
MPI
Benchmarking: LM DES [128/128 BS SSE2-16]... (48xMPI) DONE
Raw: 684363K c/s real, 677587K c/s virtual
- NETHALFLM
OMP
Benchmarking: HalfLM C/R DES [nethalflm]... (48xOMP) DONE
Many salts: 29949K c/s real, 647146 c/s virtual
Only one salt: 1622K c/s real, 262564 c/s virtual
MPI
Benchmarking: HalfLM C/R DES [nethalflm]... (48xMPI) DONE
Many salts: 52215K c/s real, 52215K c/s virtual
Only one salt: 26010K c/s real, 26010K c/s virtual
- NETLM
OMP
Benchmarking: LM C/R DES [netlm]... (48xOMP) DONE
Many salts: 28550K c/s real, 647123 c/s virtual
Only one salt: 857480 c/s real, 231109 c/s virtual
MPI
Benchmarking: LM C/R DES [netlm]... (48xMPI) DONE
Many salts: 52331K c/s real, 51813K c/s virtual
Only one salt: 17337K c/s real, 17337K c/s virtual
Is that normal? I suppose that in the same machine, the OMP
implementation should work faster, isn't?
Relevant Information:
24 physical/48 logical processor:
model name : Intel(R) Xeon(R) CPU E7- 4807 @ 1.87GHz
cache size : 18432 KB
cpu cores : 6
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good
nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor
ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2
x2apic popcnt aes lahf_lm arat dts tpr_shadow vnmi flexpriority ept vpid
John the Ripper password cracker, ver: 1.7.9-jumbo-5_mpi+omp [linux-x86-64]
Debian Wheezy
--
-------------------------------------
Javier González del Tánago Liberal
-------------------------------------
e-mail: jtanago@...mun.ls.fi.upm.es
-------------------------------------
CriptoLab. Despacho 6305.
Facultad de Informática.
Campus de Montegancedo S/N
Universidad Politécnica de Madrid.
Boadilla del Monte. Madrid (Spain)
-------------------------------------
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