S@H Enhanced vs S@H Astropulse vs S@H Multibeam - what's the difference?

Message boards : SETI@home Science : S@H Enhanced vs S@H Astropulse vs S@H Multibeam - what's the difference?

Author	Message
Sunny129 Send message Joined: 7 Nov 00 Posts: 190 Credit: 3,163,755 RAC: 0	Message 1085224 - Posted: 9 Mar 2011, 5:51:41 UTC
	well actually i think i understand the differences between S@H Enhanced and S@H Astropulse - Enhanced combs the data for the classic narrow-band signals, while Astropulse combs the data for broader-band, shorter-pulse signals. i guess AP also stands the chance of detecting signals from yet-to-be-discovered pulsars, black holes, and other astrophysical phenomena unlike Endhanced (which is a primary reason for interest in S@H these days...i'm also big into Einstein@Home for the same reason). but unlike Enhanced and AP, which have links to explanations on the home page, i see nothing about Multibeam on the home page or on the message boards...well, ok i take it back - there are a few threads regarding Multibeam, but they're all in the GPU crunching forum and not in the S@H Science forum, and so they only address GPU issues and not the science behind Multibeam. how is Multibeam different from Enhanced or AP? what is it specifically designed to search for?...aside from the obligatory "little green men" answer of course ;-) TIA, Eric ____________
	ID: 1085224 ·

skildude Send message Joined: 4 Oct 00 Posts: 8943 Credit: 36,755,266 RAC: 61,224	Message 1085307 - Posted: 9 Mar 2011, 14:31:03 UTC - in response to Message 1085224.
	because we don't run multibeam anymore its all seti@home enhanced which is in fact the multibeam with enhancements. Which is why we still abbreviate the name to MB ____________ Proud member of TSWB. End terrorism by building a school
	ID: 1085307 ·

Sunny129 Send message Joined: 7 Nov 00 Posts: 190 Credit: 3,163,755 RAC: 0	Message 1085311 - Posted: 9 Mar 2011, 14:54:09 UTC - in response to Message 1085307.
	because we don't run multibeam anymore its all seti@home enhanced which is in fact the multibeam with enhancements. Which is why we still abbreviate the name to MB oh, so MB data is more or less the same as the classic S@H Enhanced data, only it is appropriated to work w/ ATI GPU's instead of CPU's? so if i'm running both AP and MB on my 5870 GPU, then there's no real reason to run AP and/or Enhanced on my CPU unless its not dedicated to another project, correct? ____________
	ID: 1085311 ·

skildude Send message Joined: 4 Oct 00 Posts: 8943 Credit: 36,755,266 RAC: 61,224	Message 1085331 - Posted: 9 Mar 2011, 16:00:40 UTC - in response to Message 1085311.
	that would be correct. Normally, I just run MB on my CPU and AP and MB on my GPU. The obvious reason not to run AP on the CPU is that its just not timely enough compared to the GPU ____________ Proud member of TSWB. End terrorism by building a school
	ID: 1085331 ·

Sunny129 Send message Joined: 7 Nov 00 Posts: 190 Credit: 3,163,755 RAC: 0	Message 1085335 - Posted: 9 Mar 2011, 16:07:49 UTC - in response to Message 1085331.
	thanks for the clarification Skildude. so i see folks use the terms Multibeam (MB) and Enhanced interchangeably, even when speaking of CPU tasks... ____________
	ID: 1085335 ·

Josef W. Segur Volunteer developer Volunteer tester Send message Joined: 30 Oct 99 Posts: 3932 Credit: 934,327 RAC: 15	Message 1085483 - Posted: 9 Mar 2011, 23:58:18 UTC - in response to Message 1085224.
	...unlike Enhanced and AP, which have links to explanations on the home page, i see nothing about Multibeam on the home page or on the message boards. ... When Enhanced was first introduced, the data being crunched was from the single channel feed that had been used previously. On the graphics display it identified as "SETI@home Enhanced". But after the multibeam recorder was installed to take data from the ALFA receiver system, data from one of its 14 channels makes the graphics display identify as "SETI@home Multi-Beam". It's the same application and does the same processing of the data, though there are differences server-side in how the raw data is handled before being packaged as work units. The real name as used by BOINC is "setiathome_enhanced" and the user friendly name as shown on the Applications page is "SETI@home Enhanced". Joe
	ID: 1085483 ·

Message boards : SETI@home Science : S@H Enhanced vs S@H Astropulse vs S@H Multibeam - what's the difference?