QX/T 148-2020 in English
VALIDSpecification for high performance computer systemtest and evaluation in the meteorological field
- Issued on:2020-07-31
- Implemented on:2020-12-01
- File Format:PDF
- Delivery:Via email within 5 business days
$495.00
Introduction
Core changes in the standard revision
| Contents of the 2011 version | Updates to the 2020 version | Technical impact |
|---|---|---|
| Applicable only to procurement scenarios | Extended to leasing scenarios | Adapt to cloud computing service models |
| Core test terms | Changed to benchmark test terms | Aligned with international standards |
| No MPI communication test | Added MPI communication performance test | Strengthen parallel computing evaluation |
Key test indicator system
1. Computational performance test
Use GRAPES, WRF and other meteorological numerical models:
- Speedup ratio test: requires at least 8 parallel scale steps
- Peak performance = single-core performance × number of CPU cores
- Typical test case: 0.25° resolution GRAPES global model 8-day forecast
2. System function test
| Test type | Tool | Key indicators |
|---|---|---|
| I/O performance | IOzone | Read and Write Bandwidth/Latency |
| MPI Communication | Intel MPI Benchmarks | Cross-node Communication Efficiency |
| Memory Bandwidth | STREAM | Copy/Scale/Add Triad |
Analysis of Implementation Key Points
Test Environment Requirements
- Operating System: UNIX/Linux 64-bit and above
- Test Node: Fully Configured Computing Units, Memory Can Be Flexible
- Data Media: Mobile Hard Drives/CDs Must Be Verified for Availability
Avoidance of Typical Problems
- Optimization test must retain the OPTMOD modification mark
- The calculation result must provide a complete mathematical derivation process
- Job scheduling test needs to verify preemptive resource allocation
Innovation in evaluation method
Adopt a double scoring mechanism:
S = Ss(overall situation) + St(test question) St = ∑[Sbi + (Smi-Sbi)×Ri]
The calculation formula of the scoring factor Ri is:
Ri = Tmin/T (Tmin is the shortest running time)
Example: When the test time of manufacturer A is 913.35 seconds (benchmark 896.98 seconds):
Score = 1+(9-1)×(896.98/913.35)=8.857 points
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