<html><body><p><font size="2">Hi,</font><br><br><font size="2">The verification/test work is still ongoing. Hopefully GPFS will publish statement soon. I think it would be available through several channels, such as FAQ.</font><br><br><font size="2">Regards, The Spectrum Scale (GPFS) team<br><br>------------------------------------------------------------------------------------------------------------------<br>If you feel that your question can benefit other users of Spectrum Scale (GPFS), then please post it to the public IBM developerWroks Forum at <a href="https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479">https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479</a>. <br><br>If your query concerns a potential software error in Spectrum Scale (GPFS) and you have an IBM software maintenance contract please contact 1-800-237-5511 in the United States or your local IBM Service Center in other countries. <br><br>The forum is informally monitored as time permits and should not be used for priority messages to the Spectrum Scale (GPFS) team.</font><br><br><img width="16" height="16" src="cid:1__=C7BB08D7DF8F298C8f9e8a93df938690918cC7B@" border="0" alt="Inactive hide details for "Avila-Diaz, Leandro" ---03/01/2018 11:17:48 PM---Good morning, Does anyone know if IBM has an offici"><font size="2" color="#424282">"Avila-Diaz, Leandro" ---03/01/2018 11:17:48 PM---Good morning, Does anyone know if IBM has an official statement and/or perhaps a FAQ document about</font><br><br><font size="2" color="#5F5F5F">From: </font><font size="2">"Avila-Diaz, Leandro" <lavila@illinois.edu></font><br><font size="2" color="#5F5F5F">To: </font><font size="2">gpfsug main discussion list <gpfsug-discuss@spectrumscale.org></font><br><font size="2" color="#5F5F5F">Date: </font><font size="2">03/01/2018 11:17 PM</font><br><font size="2" color="#5F5F5F">Subject: </font><font size="2">Re: [gpfsug-discuss] Meltdown, Spectre, and impacts on GPFS</font><br><font size="2" color="#5F5F5F">Sent by: </font><font size="2">gpfsug-discuss-bounces@spectrumscale.org</font><br><hr width="100%" size="2" align="left" noshade style="color:#8091A5; "><br><br><br><font face="Calibri">Good morning,</font><br><font face="Calibri"> </font><br><font face="Calibri">Does anyone know if IBM has an official statement and/or perhaps a FAQ document about the Spectre/Meltdown impact on GPFS?</font><br><font face="Calibri">Thank you</font><br><font face="Calibri"> </font><br><b><font face="Calibri">From: </font></b><font face="Calibri"><gpfsug-discuss-bounces@spectrumscale.org> on behalf of IBM Spectrum Scale <scale@us.ibm.com></font><b><font face="Calibri"><br>Reply-To: </font></b><font face="Calibri">gpfsug main discussion list <gpfsug-discuss@spectrumscale.org></font><b><font face="Calibri"><br>Date: </font></b><font face="Calibri">Thursday, January 4, 2018 at 20:36</font><b><font face="Calibri"><br>To: </font></b><font face="Calibri">gpfsug main discussion list <gpfsug-discuss@spectrumscale.org></font><b><font face="Calibri"><br>Subject: </font></b><font face="Calibri">Re: [gpfsug-discuss] Meltdown, Spectre, and impacts on GPFS</font><br><font face="Calibri"> </font><p><a name="_MailOriginalBody"></a><font size="2">Kevin,</font><br><font size="2"><br>The team is aware of Meltdown and Spectre. Due to the late availability of production-ready test patches (they became available today) we started today working on evaluating the impact of applying these patches. The focus would be both on any potential functional impacts (especially to the kernel modules shipped with GPFS) and on the performance degradation which affects user/kernel mode transitions. Performance characterization will be complex, as some system calls which may get invoked often by the mmfsd daemon will suddenly become significantly more expensive because of the kernel changes. Depending on the main areas affected, code changes might be possible to alleviate the impact, by reducing frequency of certain calls, etc. Any such changes will be deployed over time.</font><br><font size="2"><br>At this point, we can't say what impact this will have on stability or Performance on systems running GPFS — until IBM issues an official statement on this topic. We hope to have some basic answers soon. </font><br><br><br><font size="2"><br>Regards, The Spectrum Scale (GPFS) team<br><br>------------------------------------------------------------------------------------------------------------------<br>If you feel that your question can benefit other users of Spectrum Scale (GPFS), then please post it to the public IBM developerWroks Forum at </font><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ibm.com_developerworks_community_forums_html_forum-3Fid-3D11111111-2D0000-2D0000-2D0000-2D000000000479&d=DwMGaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=cLEEIBn42RKkb7Uaw7awSyh9R6FQnSiXaB-OA4kE6vo&m=B_3Q9il30tD-RgLvGVp5L7NDgT_4zoa4AwHUcf-ayBw&s=HosnnsJuEYnDPQMX7VSEdm4oftDIXxU62SV-1H2WnGE&e="><u><font size="2" color="#0000FF">https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479</font></u></a><font size="2">. <br><br>If your query concerns a potential software error in Spectrum Scale (GPFS) and you have an IBM software maintenance contract please contact 1-800-237-5511 in the United States or your local IBM Service Center in other countries. <br><br>The forum is informally monitored as time permits and should not be used for priority messages to the Spectrum Scale (GPFS) team.</font><br><br><img src="cid:2__=C7BB08D7DF8F298C8f9e8a93df938690918cC7B@" width="16" height="16" alt="Inactive hide details for "Buterbaugh, Kevin L" ---01/04/2018 01:11:59 PM---Happy New Year everyone, I’m sure that everyone is"><font size="2" color="#424282">"Buterbaugh, Kevin L" ---01/04/2018 01:11:59 PM---Happy New Year everyone, I’m sure that everyone is aware of Meltdown and Spectre by now … we, like m</font><br><font size="2" color="#5F5F5F"><br>From: </font><font size="2">"Buterbaugh, Kevin L" <Kevin.Buterbaugh@Vanderbilt.Edu></font><font size="2" color="#5F5F5F"><br>To: </font><font size="2">gpfsug main discussion list <gpfsug-discuss@spectrumscale.org></font><font size="2" color="#5F5F5F"><br>Date: </font><font size="2">01/04/2018 01:11 PM</font><font size="2" color="#5F5F5F"><br>Subject: </font><font size="2">[gpfsug-discuss] Meltdown, Spectre, and impacts on GPFS</font><font size="2" color="#5F5F5F"><br>Sent by: </font><font size="2">gpfsug-discuss-bounces@spectrumscale.org</font><br><hr width="100%" size="2" align="left" noshade><br><font face="Calibri"><br><br><br>Happy New Year everyone, <br><br>I’m sure that everyone is aware of Meltdown and Spectre by now … we, like many other institutions, will be patching for it at the earliest possible opportunity.<br><br>Our understanding is that the most serious of the negative performance impacts of these patches will be for things like I/O (disk / network) … given that, we are curious if IBM has any plans for a GPFS update that could help mitigate those impacts? Or is there simply nothing that can be done?<br><br>If there is a GPFS update planned for this we’d be interested in knowing so that we could coordinate the kernel and GPFS upgrades on our cluster.<br><br>Thanks…<br><br>Kevin<br><br>P.S. The “Happy New Year” wasn’t intended as sarcasm … I hope it is a good year for everyone despite how it’s starting out. :-O<br><br>—<br>Kevin Buterbaugh - Senior System Administrator<br>Vanderbilt University - Advanced Computing Center for Research and Education</font><u><font color="#0000FF" face="Calibri"><br></font></u><a href="mailto:Kevin.Buterbaugh@vanderbilt.edu"><u><font color="#0000FF" face="Calibri">Kevin.Buterbaugh@vanderbilt.edu</font></u></a><font face="Calibri"> - (615)875-9633<br><br></font><font size="2" face="Courier New"><br>_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org</font><u><font color="#0000FF" face="Calibri"><br></font></u><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=IbxtjdkPAM2Sbon4Lbbi4w&m=m7Pdt9KL82CJT_AT-PwkmO3PbHg88-IQ7Jq-dwhDOdY&s=5i66Rx3vse5LcaN4-WlyCwi_TDTOQGQR2-X_XyjbBpw&e="><u><font size="2" color="#0000FF" face="Courier New">https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=IbxtjdkPAM2Sbon4Lbbi4w&m=m7Pdt9KL82CJT_AT-PwkmO3PbHg88-IQ7Jq-dwhDOdY&s=5i66Rx3vse5LcaN4-WlyCwi_TDTOQGQR2-X_XyjbBpw&e=</font></u></a><font face="Calibri"><br><br><br><br></font><br><tt><font size="2">_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org<br></font></tt><tt><font size="2"><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=IbxtjdkPAM2Sbon4Lbbi4w&m=qFtjLJBRsEewfEfVZBW__Xk8CD9w04bJZpK0sJiCze0&s=LyDrwavwKGQHDl4DVW6-vpW2bjmJBtXrGGcFfDYyI4o&e=">https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=IbxtjdkPAM2Sbon4Lbbi4w&m=qFtjLJBRsEewfEfVZBW__Xk8CD9w04bJZpK0sJiCze0&s=LyDrwavwKGQHDl4DVW6-vpW2bjmJBtXrGGcFfDYyI4o&e=</a></font></tt><tt><font size="2"><br></font></tt><br><br><BR>
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