From: Helen He (yhe_at_lbl_dot_gov)
Date: 09/08/2008
Dear Franklin users, Franklin quad core upgrade phase 3a will start on this Wednesday, September 10. The scheduled down time is from 07:30-13:30 PDT. The start time of phase 3b will be approximately one week later (to be announced). Franklin will have 18,352 quad cores and 10,144 dual cores during phase 3a, and 18.352 quad cores and 2,080 dual cores during phase 3b. Aside from the two important messages from last announcement: 1) The default user environment will be set to quad core environment. This means that the default built executable will be targeted to run on the quad core nodes. 2) Charging for computing on the quad core nodes will start from phase 3a. However, the charging rate will be the same as for the dual core nodes. i.e., wall clock hours x num_nodes_used x 2 cores/node (instead of 4 cores/node here) x 6.5 machine charge factor x queue priority. And there will be no new allocations from DOE for the allocation year AY08. There are two additional messages: 3) The Franklin queue structure will be modified so that basically the min and max cores for each execution queue will be doubled from the current values. (see https://www.nersc.gov/nusers/systems/franklin/running_jobs/classes.php, the web page will be updated on Sept. 10). This also means that the entry point for the 50% discount for reg_big and reg_xbig will be doubled. 4) Before Franklin quad core system is officially accepted, Franklin performance data on quad cores will be OK to publish starting from phase 3b AFTER reviewing your results, especially quad core performance penalty, with NERSC. Please write to consult_at_nersc_dot_gov for publication and presentation purpose. Please refer to the detailed upgrade schedule information along with the user environment changes and usage guide for phase 3 at: https://www.nersc.gov/nusers/systems/franklin/quadcore_upgrade.php#phase3 Best Regards, Helen He NERSC User Services On 8/27/2008 3:58 PM, Helen He wrote: > Dear Franklin users, > > Franklin quad core upgrade phase 3 is tentatively scheduled to start > on Sept 10. Franklin will be first in full machine production with 8 > columns of quad core nodes and 9 columns of dual core nodes first > (phase 3a, total of 28,496 compute cores). Then 7 columns of dual core > nodes will be moved one week later to the test environment for quad > core upgrade and Franklin will be in production with 8 columns of quad > core nodes and 2 columns of dual core nodes (phase 3b, total of 20,432 > compute cores). > > Two important messages regarding phase 3 upgrade are: > > 1) Charging for computing on the quad core nodes will start from phase > 3. However, the charging rate will be the same as for the dual core > nodes. i.e., wall clock hours x num_nodes_used x 2 cores/node (instead > of 4 cores/node here) x 6.5 machine charge factor x queue priority. > And there will be no new allocations from DOE for the allocation year > AY08. > > 2) The default user environment will be set to quad core environment. > This means that the default built executable will be targeted to run > on the quad core nodes. > > Please refer to the detailed upgrade schedule information along with > the user environment changes and usage guide for phase 3 at: > https://www.nersc.gov/nusers/systems/franklin/quadcore_upgrade.php#phase3 > > Best Regards, > > Helen He > NERSC User Services > > _______________________________________________ > franklin-users mailing list > franklin-users_at_nersc_dot_gov _______________________________________________ franklin-users mailing list franklin-users_at_nersc_dot_gov
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