Timeline for ParallelTable 70 times slower on 16 cores than Table on single core
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 16, 2020 at 9:23 | history | edited | CommunityBot | Commonmark migration | |
| Apr 13, 2017 at 12:55 | history | edited | CommunityBot | replaced http://mathematica.stackexchange.com/ with https://mathematica.stackexchange.com/ | |
| Sep 4, 2013 at 0:43 | comment | added | Szabolcs | @MichaelE2 It could be because SetSharedVariable avoids the memory issue. | |
| Sep 3, 2013 at 23:35 | comment | added | Michael E2 | @Szabolcs Nevermind: I got a significant speed-up with SetSharedVariables when n goes up to only 2, as in the OP's question. If I make it go up to 16, it becomes slower. | |
| Sep 3, 2013 at 20:09 | comment | added | Szabolcs | I tried on v8 now and I still can't reproduce. See my comment about memory usage though. | |
| Sep 3, 2013 at 20:06 | comment | added | Szabolcs | @MichaelE2 That would slow down things even more as the main kernel would need to be accessed for every single calculation (every single element of the computed list). | |
| Sep 2, 2013 at 23:15 | answer | added | Szabolcs | timeline score: 6 | |
| Sep 2, 2013 at 21:40 | history | edited | xslittlegrass | CC BY-SA 3.0 | added 55 characters in body |
| Sep 2, 2013 at 21:23 | history | edited | xslittlegrass | CC BY-SA 3.0 | added 2306 characters in body |
| Sep 2, 2013 at 20:43 | comment | added | xslittlegrass | @OleksandrR. Sorry for the delay, but why do we need DistributeDefinitions? I thought ParallelTable will automatically distribute the calculation. | |
| Jul 12, 2013 at 3:17 | comment | added | Oleksandr R. | I don't see any DistributeDefinitions here. Also, this. | |
| Jul 12, 2013 at 2:44 | history | asked | xslittlegrass | CC BY-SA 3.0 |