| System Information | ||||
| Affiliation: | University of Cambridge | URL: | http://www.hpc.cam.ac.uk | |
| Location: | United Kingdom, Cambridge | System Use: | Academic | |
| System Manufacturer: | ClusterVision/Dell/QLogic | System Name: | Darwin | |
| Interconnect Manufacturer: | QLogic | Interconnect Type: | InfiniBand DDR, QLogic TrueScale adapters | |
| Operating System: | Scientific Linux CERN SLC release 4.6 (Beryllium) | MPI: | HPMPI-2.02.07.00 | |
| MPI Wtick: | 0.001 | BLAS: | GotoBLAS 1.25 | |
| Language: | C | Compiler: | Intel C/C++ Compiler 10.0.026 | |
| Compiler Flags: | -O3 -ansi-alias -no-prec-div -no-prec-sqrt -fomit-frame-pointer -xT -restrict -DRA_SANDIA_OPT2 -DHPCC_MEMALLCTR; STREAMCCFLAGS=-fno-alias -opt-streaming-stores always | Processor Type: | Intel Xeon 5160 | |
| Processor Speed: | 3 GHz | Total Processors: | 256 | |
| Processors Entered: | 256 | Processors determined: | 256 | |
| Cores per chip: | 2 | HPL Processes: | 256 | |
| MPI Processes: | 256 | Threads Entered: | 1 | |
| Threads determined: | 1 | FLOPs per cycle: | ||
| Theoretical peak: | 3.072 TFlop/s | Total memory: | 512 GiB | |
| FFT library: | ||||
| HPL | ||||
| HPL: | 2.46013 Tflop/s | HPL time: | 3128.1 | |
| HPL eps: | 2.22045e-16 | HPL Rnorm1: | 0.0000000283947 | |
| HPL Anorm1: | 56801.7 | HPL AnormI: | 56782.4 | |
| HPL Xnorm1: | 2313760 | HPL XnormI: | 63.9809 | |
| HPL N: | 226000 | HPL NB: | 184 | |
| HPL NProw: | 8 | HPL NPcol: | 32 | |
| HPL depth: | 1 | HPL NBdiv: | 2 | |
| HPL NBmin: | 4 | HPL CPfact: | R | |
| HPL CRfact: | C | HPL CPtop: | 1 | |
| HPL order: | R | |||
| HPL dMach EPS: | 2.220446e-16 | HPL sMach EPS: | 0.0000001192093 | |
| HPL dMach sfMin: | 0 | HPL sMach sfMin: | 1.175494e-38 | |
| HPL dMach Base: | 2 | HPL sMach Base: | 2 | |
| HPL dMach Prec: | 4.440892e-16 | HPL sMach Prec: | 0.0000002384186 | |
| HPL dMach mLen: | 53 | HPL sMach mLen: | 24 | |
| HPL dMach Rnd: | 0 | HPL sMach Rnd: | 0 | |
| HPL dMach eMin: | -1021 | HPL sMach eMin: | -125 | |
| HPL dMach rMin: | 0 | HPL sMach rMin: | 1.175494e-38 | |
| HPL dMach eMax: | 1025 | HPL sMach eMax: | 129 | |
| HPL dMach rMax: | 0 | HPL sMach rMax: | 0 | |
| dweps: | 1.110223e-16 | sweps: | 0.00000005960464 | |
| PTRANS | ||||
| PTRANS: | 30.8088 GB/s | PTRANS time: | 3.20293 seconds | |
| PTRANS residual: | 0 | PTRANS N: | 113000 | |
| PTRANS NB: | 184 | PTRANS NProw: | 8 | |
| PTRANS NPcol: | 32 | |||
| STREAM | ||||
| S-STREAM Copy: | 3.08217 GB/s | S-STREAM Scale: | 3.06973 GB/s | |
| S-STREAM Add: | 3.43392 GB/s | S-STREAM Triad: | 3.30171 GB/s | |
| EP-STREAM Copy: | 1.23022 GB/s | EP-STREAM Scale: | 1.22706 GB/s | |
| EP-STREAM Add: | 1.37535 GB/s | EP-STREAM Triad: | 1.36394 GB/s | |
| STREAM Vector Size: | 66505208 | STREAM Threads: | 1 | |
| RandomAccess | ||||
| S-RandomAccess: | 0.0142629 Gup/s | EP-RandomAccess: | 0.00720732 Gup/s | |
| G-RandomAccess: | 0.768997 Gup/s | G-RandomAccess N: | 34359738368 | |
| G-RandomAccess time: | 178.725 seconds | G-RandomAccess Check Time: | 118.592 seconds | |
| G-RandomAccess Errors: | 49440 | G-RandomAccess Errors Fraction: | 0.00000143889 | |
| G-RandomAccess TimeBound: | -1 | G-RandomAccess ExeUpdates: | 137438953472 | |
| RandomAccess N: | 134217728 | |||
| FFT | ||||
| S-FFT: | 1.27688 GFlop/s | EP-FFT: | 0.680378 GFlop/s | |
| MPIFFT: | 54.3011 GFlop/s | MPIFFT N: | 4294967296 | |
| MPIFFT Max Error: | 0.00000000000000320237 | MPIFFT time0: | 0.00000190735 seconds | |
| MPIFFT time1: | 1.70657 seconds | MPIFFT time2: | 1.87578 seconds | |
| MPIFFT time3: | 1.17198 seconds | MPIFFT time4: | 5.24628 seconds | |
| MPIFFT time5: | 2.22265 seconds | MPIFFT time6: | 0.00000309944 seconds | |
| FFTEnblk: | 16 | FFTEnp: | 8 | |
| FFTEl2size: | 1048576 | |||
| DGEMM | ||||
| S-DGEMM: | 11.3181 GFlop/s | EP-DGEMM: | 10.8562 GFlop/s | |
| DGEMM N: | 8154 | |||
| RandomRing Latency/Bandwidth | ||||
| RandomRing Latency: | 1.32604 usec | RandomRing Bandwidth: | 0.224688 GB/s | |
| NaturalRing Latency/Bandwidth | ||||
| NaturalRing Latency: | 1.15508 usec | NaturalRing Bandwidth: | 0.414872 GB/s | |
| PingPong Latency/Bandwidth | ||||
| Maximum PingPong Latency: | 1.75972 usec | Maximum PingPong Bandwidth: | 3.85411 GB/s | |
| Minimum PingPong Latency: | 1.45082 usec | Minimum PingPong Bandwidth: | 1.07802 GB/s | |
| Average PingPong Latency: | 1.70913 usec | Average PingPong Bandwidth: | 1.30725 GB/s | |
| Size of Data Types | ||||
| char: | 1 byte | short: | 2 bytes | |
| int: | 4 bytes | long: | 8 bytes | |
| void ptr: | 8 bytes | float: | 4 bytes | |
| double: | 8 bytes | size t: | 8 bytes | |
| s64Int: | 8 bytes | u64Int: | 8 bytes | |
| OpenMP | ||||
| M OpenMP: | -1 | OpenMP Num Threads: | 0 | |
| OpenMP Num Procs: | 0 | OpenMP Max Threads: | 0 | |
| Memory | ||||
| MemProc: | -1 | MemSpec: | -1 | |
| MemVal: | -1 | |||
| CPS | ||||
| CPS_HPCC_FFT_235: | 0 | CPS_HPCC_FFTW_ESTIMATE: | 0 | |
| CPS_HPCC_MEMALLCTR: | 1 | CPS_HPL_USE_GETPROCESSTIMES: | 0 | |
| CPS_RA_SANDIA_NOPT: | 0 | CPS_RA_SANDIA_OPT2: | 1 | |