The automatic gfortran performance tester

On this page, results are posted to track the performance of the gcc compiler for typical CP2K runs. gfortran, as available in the latest gcc version (svn trunk, mainline of that particular night) is used for compiling a fixed version of CP2K. Two benchmarks are run every night with the corresponding svn version of gcc. If the results are correct, the timings are collected and posted. While the machine used for benchmarking is typically idle, it is not dedicated, and some noise could be present in the results.

Results

Smaller numbers are better, missing data indicates failed builds (of either gcc or CP2K), or wrong results.


Download this night's build log in case of failure. Analyse raw data all_results.gz to find the precise date of significant changes.

Details

CP2K is currently compiled using '-O3 -ffast-math -funroll-loops -ftree-vectorize -march=native -ffree-form -g -D__GFORTRAN -D__FFTSG' and linked against mkl (9.1.006). Benchmarks are executed five times, and the best of 5 runs is reported. The exact version of CP2K, benchmark and arch file is available for download, together with the script used for building/running gcc. Note that the latest version of CP2K is available from the CP2K homepage. The reference timings are gcc 4.3.0 (release) and ifort 9.1 20060707. Current benchmark machine (2008-08-01): 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
stepping        : 6
cpu MHz         : 1596.000
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
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 syscall nx lm constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
bogomips        : 4804.05
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
stepping        : 6
cpu MHz         : 1596.000
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
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 syscall nx lm constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
bogomips        : 4800.06
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

Contact

Contact Joost VandeVondele for details (vondele@pci.uzh.XYZ) (XYZ for switzerland, i.e. Confoederatio Helvetica).
Back to the CP2K homepage