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Real Time Compatible Systems

Last edited by Ezekiel Dohmen

This page will capture the servers where LIGO real-time isolation has been tested and verified or where known issues have been found.

Here is a DDC document that goes through setting up the BIOS on various machines: https://dcc.ligo.org/LIGO-T1300430

Working Front-ends

CPU Model Name Status Benchmark Results Other Notes
INTEL(R) XEON(R) GOLD 5515+ Test-stand Verified Avg: 3684 ns, min: 3422 ns, max: 3787 ns
Intel(R) Xeon(R) W-3323 CPU @ 3.50GHz Test-stand Verified Avg: 3206 ns, min: 2372 ns, max: 3357 ns
Intel(R) Xeon(R) W-2145 CPU @ 3.70GHz ✅ Production Verified
Intel(R) Xeon(R) W-2245 CPU @ 3.90GHz ✅ Production Verified If the benchmark is slow, P-States might not be disabled.
Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz ✅ Production Verified
Intel(R) Xeon(R) CPU E5-1660 v4 @ 3.20GHz ✅ Production Verified
Intel(R) Xeon(R) CPU X5680 @ 3.33GHz ✅ Production Verified Needed to add idel=poll on test-stand, did not verify BIOS directly
Intel(R) Xeon(R) CPU E5-1660 v4 @ 3.20GHz Test-stand Verified

Lightly Tested Working

CPU Model Name Status Other Notes
AMD Ryzen 7800x3D (NZXT n7 b650e, 4800MHz ddr5 non-ecc memory) Benchmark Verified ~12 hours Avg: 2380 ns, min: 2364 ns, max: 2504 ns, max_index: 516080, max_index_percent: 0%
Intel Zeon Silver 4314 CPU @ 2.4 Ghz Benchmark Verified Avg: 6839 ns, min: 6838 ns, max: 6961 ns Very slow, not a targeted FE machine

Know Issues

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