| System Information | ||||
| Affiliation: | RIKEN Advanced Institute for Computational Science (AICS) | URL: | http://www.aics.riken.jp/index_e.html | |
| Location: | Japan, Kobe, Hyogo | System Use: | Research | |
| System Manufacturer: | Fujitsu Ltd. | System Name: | K computer | |
| Interconnect Manufacturer: | Fujitsu Ltd. | Interconnect Type: | Tofu interconnect | |
| Operating System: | Linux | MPI: | Parallelnavi Technical Computing Language V1.0L20 | |
| MPI Wtick: | 0.0000001 | BLAS: | Parallelnavi Technical Computing Language V1.0L20 | |
| Language: | C | Compiler: | Parallelnavi Technical Computing Language V1.0L20 | |
| Compiler Flags: | -Kfast,parallel,openmp,ocl (and "-mlcmain=main -SSL2BLAMP" for LINKFLAGS, "-Fwide" for Fortran files) | Processor Type: | Fujitsu SPARC64 VIIIfx | |
| Processor Speed: | 2 GHz | Total Processors: | 147456 | |
| Processors Entered: | 147456 | Processors determined: | 147456 | |
| Cores per chip: | 8 | HPL Processes: | 18432 | |
| MPI Processes: | 18432 | Threads Entered: | 8 | |
| Threads determined: | 8 | FLOPs per cycle: | ||
| Theoretical peak: | 2359.296 TFlop/s | Total memory: | 294912 GiB | |
| FFT library: | FFTE 5.0 | |||
| Explain Optimizations: | ||||
G-HPL: adopted pipelined broadcast communication and promoted fine-grain overlapped data transfer | ||||
| HPL | ||||
| HPL: | 2114.19 Tflop/s | HPL time: | 27344.5 | |
| HPL eps: | 1.11022e-16 | HPL Rnorm1: | 0.00000291498 | |
| HPL Anorm1: | 1108140 | HPL AnormI: | 1108170 | |
| HPL Xnorm1: | 6344100 | HPL XnormI: | 9.0764 | |
| HPL N: | 4426240 | HPL NB: | 448 | |
| HPL NProw: | 64 | HPL NPcol: | 288 | |
| HPL depth: | 1 | HPL NBdiv: | 2 | |
| HPL NBmin: | 8 | HPL CPfact: | L | |
| HPL CRfact: | L | HPL CPtop: | 0 | |
| HPL order: | C | |||
| 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: | 5935.73 GB/s | PTRANS time: | 6.45077 seconds | |
| PTRANS residual: | 0 | PTRANS N: | 2213120 | |
| PTRANS NB: | 193 | PTRANS NProw: | 64 | |
| PTRANS NPcol: | 288 | |||
| STREAM | ||||
| S-STREAM Copy: | 45.2738 GB/s | S-STREAM Scale: | 45.2604 GB/s | |
| S-STREAM Add: | 43.4094 GB/s | S-STREAM Triad: | 43.2622 GB/s | |
| EP-STREAM Copy: | 45.2633 GB/s | EP-STREAM Scale: | 45.2529 GB/s | |
| EP-STREAM Add: | 43.2542 GB/s | EP-STREAM Triad: | 43.2605 GB/s | |
| STREAM Vector Size: | 354304118 | STREAM Threads: | 8 | |
| RandomAccess | ||||
| S-RandomAccess: | 0.0367156 Gup/s | EP-RandomAccess: | 0.0363708 Gup/s | |
| G-RandomAccess: | 77.6127 Gup/s | G-RandomAccess N: | 17592186044416 | |
| G-RandomAccess time: | 906.665 seconds | G-RandomAccess Check Time: | 718.079 seconds | |
| G-RandomAccess Errors: | 0 | G-RandomAccess Errors Fraction: | 0 | |
| G-RandomAccess TimeBound: | -1 | G-RandomAccess ExeUpdates: | 70368744177664 | |
| RandomAccess N: | 536870912 | |||
| FFT | ||||
| S-FFT: | 5.94628 GFlop/s | EP-FFT: | 5.94301 GFlop/s | |
| MPIFFT: | 32499.5 GFlop/s | MPIFFT N: | 2446118092800 | |
| MPIFFT Max Error: | 0.00000000000000336659 | MPIFFT time0: | 0.000003902 seconds | |
| MPIFFT time1: | 4.29044 seconds | MPIFFT time2: | 1.61162 seconds | |
| MPIFFT time3: | 3.74546 seconds | MPIFFT time4: | 1.45818 seconds | |
| MPIFFT time5: | 4.23287 seconds | MPIFFT time6: | 0.000002601 seconds | |
| FFTEnblk: | 16 | FFTEnp: | 8 | |
| FFTEl2size: | 6291456 | |||
| DGEMM | ||||
| S-DGEMM: | 119.681 GFlop/s | EP-DGEMM: | 117.562 GFlop/s | |
| DGEMM N: | 18822 | |||
| RandomRing Latency/Bandwidth | ||||
| RandomRing Latency: | 7.19072 usec | RandomRing Bandwidth: | 0.233575 GB/s | |
| NaturalRing Latency/Bandwidth | ||||
| NaturalRing Latency: | 4.922 usec | NaturalRing Bandwidth: | 3.10108 GB/s | |
| PingPong Latency/Bandwidth | ||||
| Maximum PingPong Latency: | 6.40969 usec | Maximum PingPong Bandwidth: | 4.57541 GB/s | |
| Minimum PingPong Latency: | 2.99556 usec | Minimum PingPong Bandwidth: | 4.4638 GB/s | |
| Average PingPong Latency: | 4.4526 usec | Average PingPong Bandwidth: | 4.522 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: | 200805 | OpenMP Num Threads: | 8 | |
| OpenMP Num Procs: | 8 | OpenMP Max Threads: | 8 | |
| 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: | 1 | CPS_RA_SANDIA_OPT2: | 0 | |