I actually did not reboot since I was waiting for your answer :-) Was just asking whether the bios update has fixed the issue. I am planning to reboot in cache to get some baseline numbers tonight and reboot again in quadrant/flat. I assume this works fine. Please let me know if there is anything I am missing. Fabien ________________________________________ From: Allen, Benjamin S. <[email protected]> Sent: Tuesday, May 24, 2016 12:20 AM To: Delalondre Fabien Jonathan Cc: Parker, Scott J.; [email protected] Subject: Re: [JLSE-Intel-NDA] KNL00 BIOS Update Fabien, I suspect that Scott was powering the machine off on each mode change, then using IPMI to power it back up. We know that the warm reboot issue remains in this BIOS, so this procedure is still needed. As such you'll never actually warm reboot into SNC-4 and experience the hang. Scott correct me if I'm wrong here in what you tried. Ben
On May 23, 2016, at 4:20 PM, Delalondre Fabien Jonathan <[email protected]> wrote:
Ok thanks. Does this sentence on the wiki still applies ? "Please note that currently [..] reboot into SNC mode hangs"
Best,
Fabien ________________________________________ From: Scott Parker <[email protected]> Sent: Monday, May 23, 2016 11:16 PM To: Delalondre Fabien Jonathan; Allen, Benjamin S.; [email protected] Subject: Re: [JLSE-Intel-NDA] KNL00 BIOS Update
Nothing significant - there was a small bump for flat-quad mode from a previously measure peak of 435 to 449 GB/s but this is only 3% and more or less in the noise range of the measurements. SNC-4 mode continues to exhibit problems with one of the NUMA domains being slower and peak bandwidth of 440 GB/s only achievable with 128 threads (vs 64 threads for peak of very close to peak in other modes). Cache mode wasn't tested.
-Scott
On 5/23/16 4:08 PM, Delalondre Fabien Jonathan wrote:
Did you observe any performance improvements for STREAM ?
Cheers,
Fabien ________________________________________ From: [email protected] <[email protected]> on behalf of Allen, Benjamin S. <[email protected]> Sent: Monday, May 23, 2016 11:05 PM To: [email protected] Subject: Re: [JLSE-Intel-NDA] KNL00 BIOS Update
We're done testing. Sorry for taking the machine away for a bit longer than expected.
Ben
On May 23, 2016, at 3:03 PM, Allen, Benjamin S. <[email protected]> wrote:
This work is done. Note, we're still doing a few benchmarks to see if the BIOS has fixed any of our standing issues.
Also, this BIOS update renamed the BIOS parameters for the Memory Model and Mode. They are now "Memory Mode" and "Cluster Mode". The Wiki has been updated to show this.
A separate Intel Vtune 2016 copy has been installed under /soft/restricted/intel-vtune-nda. This install contains the Intel NDA KNL add-on. I've not tested it, so please let me know if it works. I have compiled the sep4_0 kernel module from this VTune install, and set knl00 the load it on boot.
Ben
On May 23, 2016, at 9:20 AM, Allen, Benjamin S. <[email protected]> wrote:
I'll be installing BIOS 01.01.0132, ME03.01.03.012.0, BMC FW 00.17.9699, and FRUSDR 1.14 later today. Release notes attached.
Ben
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