| System Information | ||||
| Affiliation: | IBM Development Engineering | URL: | http://www-03.ibm.com/systems/power/hardware/775/ | |
| Location: | USA, New York | System Use: | Research | |
| System Manufacturer: | IBM | System Name: | Power 775 | |
| Interconnect Manufacturer: | IBM | Interconnect Type: | Custom IBM Hub Chip | |
| Operating System: | Redhat Linux 6.2 | MPI: | IBM PE v1209 | |
| MPI Wtick: | 0.000000001 | BLAS: | ESSL 5.1.0-2 | |
| Language: | C | Compiler: | xlc 12.1 | |
| Compiler Flags: | -g -qhalt=w -qsmp=omp -g -q64 -O3 -qhot -qarch=pwr7 -qtune=pwr7 | Processor Type: | IBM Power7 | |
| Processor Speed: | 3.836 GHz | Total Processors: | 1996 | |
| Processors Entered: | 1989 | Processors determined: | 63648 | |
| Cores per chip: | 32 | HPL Processes: | 1989 | |
| MPI Processes: | 1989 | Threads Entered: | 32 | |
| Threads determined: | 32 | FLOPs per cycle: | ||
| Theoretical peak: | 1953 TFlop/s | Total memory: | 254592 GiB | |
| FFT library: | serial: Custom+FFTW 3.3.2, parallel: Custom+FFTW 3.3.2 | |||
| Explain Optimizations: | ||||
| EP-GUPS and G-GUPS: Hardware support in IBM Hub Chip. G-FFT: Custom global transpose (all-to-all) integrated with FFTW. PTRANS: Custom transpose communication routines. EP-Stream: Prefetching instructions. EP-FFT: Custom memory transpose integrated with FFTW. | ||||
| HPL | ||||
| HPL: | 1343.67 Tflop/s | HPL time: | 15693.3 | |
| HPL eps: | 1.11022e-16 | HPL Rnorm1: | 0.000000279611 | |
| HPL Anorm1: | 791935 | HPL AnormI: | 791971 | |
| HPL Xnorm1: | 864915 | HPL XnormI: | 1.69651 | |
| HPL N: | 3162510 | HPL NB: | 144 | |
| HPL NProw: | 17 | HPL NPcol: | 117 | |
| HPL depth: | 1 | HPL NBdiv: | 2 | |
| HPL NBmin: | 4 | HPL CPfact: | R | |
| HPL CRfact: | R | HPL CPtop: | 1 | |
| HPL order: | R | |||
| HPL dMach EPS: | 1.110223e-16 | HPL sMach EPS: | 0.00000005960464 | |
| HPL dMach sfMin: | 2.225074e-308 | HPL sMach sfMin: | 1.175494e-38 | |
| HPL dMach Base: | 2 | HPL sMach Base: | 2 | |
| HPL dMach Prec: | 2.220446e-16 | HPL sMach Prec: | 0.0000001192093 | |
| HPL dMach mLen: | 53 | HPL sMach mLen: | 24 | |
| HPL dMach Rnd: | 1 | HPL sMach Rnd: | 1 | |
| HPL dMach eMin: | -1021 | HPL sMach eMin: | -125 | |
| HPL dMach rMin: | 2.225074e-308 | HPL sMach rMin: | 1.175494e-38 | |
| HPL dMach eMax: | 1024 | HPL sMach eMax: | 128 | |
| HPL dMach rMax: | 1.797693e308 | HPL sMach rMax: | 3.402823e38 | |
| dweps: | 1.110223e-16 | sweps: | 0.00000005960464 | |
| PTRANS | ||||
| PTRANS: | 60473.8 GB/s | PTRANS time: | 0.32948 seconds | |
| PTRANS residual: | 0 | PTRANS N: | 1581255 | |
| PTRANS NB: | 15 | PTRANS NProw: | 17 | |
| PTRANS NPcol: | 117 | |||
| STREAM | ||||
| S-STREAM Copy: | 174.379 GB/s | S-STREAM Scale: | 174.47 GB/s | |
| S-STREAM Add: | 203.468 GB/s | S-STREAM Triad: | 264.006 GB/s | |
| EP-STREAM Copy: | 175.775 GB/s | EP-STREAM Scale: | 176.005 GB/s | |
| EP-STREAM Add: | 205.081 GB/s | EP-STREAM Triad: | 264.156 GB/s | |
| STREAM Vector Size: | 1676130300 | STREAM Threads: | 32 | |
| RandomAccess | ||||
| S-RandomAccess: | 1.14481 Gup/s | EP-RandomAccess: | 1.1456 Gup/s | |
| G-RandomAccess: | 2020.77 Gup/s | G-RandomAccess N: | 8796093022208 | |
| G-RandomAccess time: | 17.4113 seconds | G-RandomAccess Check Time: | 5822.79 seconds | |
| G-RandomAccess Errors: | 0 | G-RandomAccess Errors Fraction: | 0 | |
| G-RandomAccess TimeBound: | -1 | G-RandomAccess ExeUpdates: | 35184372088832 | |
| RandomAccess N: | 4294967296 | |||
| FFT | ||||
| S-FFT: | 108.834 GFlop/s | EP-FFT: | 108.176 GFlop/s | |
| MPIFFT: | 132658 GFlop/s | MPIFFT N: | 1209323520000 | |
| MPIFFT Max Error: | 0.00000000000000393858 | MPIFFT time0: | 0 seconds | |
| MPIFFT time1: | 0 seconds | MPIFFT time2: | 0 seconds | |
| MPIFFT time3: | 0 seconds | MPIFFT time4: | 0 seconds | |
| MPIFFT time5: | 0 seconds | MPIFFT time6: | 0 seconds | |
| FFTEnblk: | 16 | FFTEnp: | 8 | |
| FFTEl2size: | 1048576 | |||
| DGEMM | ||||
| S-DGEMM: | 827.337 GFlop/s | EP-DGEMM: | 828.063 GFlop/s | |
| DGEMM N: | 40940 | |||
| RandomRing Latency/Bandwidth | ||||
| RandomRing Latency: | 6.3974 usec | RandomRing Bandwidth: | 3.33471 GB/s | |
| NaturalRing Latency/Bandwidth | ||||
| NaturalRing Latency: | 6.07967 usec | NaturalRing Bandwidth: | 6.20344 GB/s | |
| PingPong Latency/Bandwidth | ||||
| Maximum PingPong Latency: | 6.3926 usec | Maximum PingPong Bandwidth: | 7.98915 GB/s | |
| Minimum PingPong Latency: | 1.75834 usec | Minimum PingPong Bandwidth: | 4.29304 GB/s | |
| Average PingPong Latency: | 3.47154 usec | Average PingPong Bandwidth: | 5.49759 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: | 201107 | OpenMP Num Threads: | 32 | |
| OpenMP Num Procs: | 64 | OpenMP Max Threads: | 32 | |
| Memory | ||||
| MemProc: | -1 | MemSpec: | -1 | |
| MemVal: | -1 | |||
| CPS | ||||
| CPS_HPCC_FFT_235: | 1 | CPS_HPCC_FFTW_ESTIMATE: | 0 | |
| CPS_HPCC_MEMALLCTR: | 0 | CPS_HPL_USE_GETPROCESSTIMES: | 0 | |
| CPS_RA_SANDIA_NOPT: | 0 | CPS_RA_SANDIA_OPT2: | 0 | |