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More New N-Body Runs
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Send message Joined: 20 Aug 12 Posts: 66 Credit: 406,916 RAC: 0 |
I have started: de_nbody_02_28_orphan_real_0 ps_nbody_02_28_orphan_real_0 de_nbody_02_28_orphan_real_1 ps_nbody_02_28_orphan_real_1 de_nbody_02_28_orphan_real_2 ps_nbody_02_28_orphan_real_2 |
Send message Joined: 22 Jan 11 Posts: 375 Credit: 64,684,079 RAC: 2,096 |
OK, btw what's different about these WUs/simulations to others? And nbody means CPU WUs only? Team AnandTech - SETI@H, DPAD, F@H, MW@H, A@H, LHC, POGS, R@H, Einstein@H, DHEP, WCG Main rig - Ryzen 5 3600, MSI B450 G.Pro C. AC, RTX 3060Ti 8GB, 32GB DDR4 3200, Win 10 64bit 2nd rig - i7 4930k @4.1 GHz, HD 7870 XT 3GB(DS), 16GB DDR3 1866, Win7 |
Send message Joined: 20 Aug 12 Posts: 66 Credit: 406,916 RAC: 0 |
MilkyWay@Home runs 2 applications: Separation tries to pull out structures called "stellar streams" from a background (see astrophysics section of the website) by running a complicated probability calculation. Separation is an older project and has since acquired a GPU version to supplement the CPU calculations. N-body is tasked with the problem of replicating the creation of stellar streams from collisions in an arbitrary Galactic gravitational potential (basically a measure of how strong the gravity of the Milky Way is at any point and space, and in principle, time as well). What you guys are doing is running a single n-body simulation and telling us what the likelihood of your simulation fitting the observed data. In principle, this will eventually tell us where dark matter is in the Milky Way system. This is a newer application and only runs on CPUs at present, although this has potential to change in the near future. I hope this helps! Jake |
Send message Joined: 1 Oct 13 Posts: 2 Credit: 6,452,170 RAC: 0 |
Please mark assignments for N-body as burdening N-1 (and possibly N-2, or even N*3/4) CPU cores. Now it turns out the situation in which the equipment (4CPU + HT = 8CPU) is not fully loaded, that is not correct :( |
Send message Joined: 22 Jan 11 Posts: 375 Credit: 64,684,079 RAC: 2,096 |
MilkyWay@Home runs 2 applications: Yea it does, thx :) What's the difference between de & ps, & real 0-2? Team AnandTech - SETI@H, DPAD, F@H, MW@H, A@H, LHC, POGS, R@H, Einstein@H, DHEP, WCG Main rig - Ryzen 5 3600, MSI B450 G.Pro C. AC, RTX 3060Ti 8GB, 32GB DDR4 3200, Win 10 64bit 2nd rig - i7 4930k @4.1 GHz, HD 7870 XT 3GB(DS), 16GB DDR3 1866, Win7 |
Send message Joined: 1 Oct 13 Posts: 2 Credit: 6,452,170 RAC: 0 |
p.s: (4CPU + HT = 8CPU) is not fully loaded, that is not correct :( Loading kept within 60-70%, so the mind just to make corrections N*3/4 (for N-body) that would provide full system load. This problem I have seen in other multi-core systems with the first appearance of multi-threaded applications in MilkyWay@Home. Waiting for corrections load CPU, or complete transfer of such applications on the GPU. |
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