Xeon Phi (aka Knights Corner, MIC)

Message boards : Number crunching : Xeon Phi (aka Knights Corner, MIC)

Author	Message
HAL9000 Volunteer tester Send message Joined: 11 Sep 99 Posts: 3279 Credit: 76,804,781 RAC: 78,315	Message 1249935 - Posted: 22 Jun 2012, 13:34:05 UTC - in response to Message 1249851. Last modified: 22 Jun 2012, 13:56:58 UTC
	There was a software tool called Parallel Virtual Machine by the University of Tennessee which allowed this. Once I connected a Bull/Mips minicomputer and a SUN SparcStation using this tool. Tullio That sounds neat. I will have to see if I can get that to work on some of my machines in the lab. Hopefully this is the software you were referring to? http://www.csm.ornl.gov/pvm/ ____________ SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the BP6/VP6 User Group today!
	ID: 1249935 ·

tullio Send message Joined: 9 Apr 04 Posts: 2905 Credit: 259,140 RAC: 300	Message 1249939 - Posted: 22 Jun 2012, 13:51:14 UTC - in response to Message 1249935.
	Yes. I was meaning it. ____________
	ID: 1249939 ·

Cosmic_Ocean Send message Joined: 23 Dec 00 Posts: 2079 Credit: 6,725,792 RAC: 4,750	Message 1250034 - Posted: 22 Jun 2012, 17:30:12 UTC
	I tried PVM a long time ago. Back on Fedora 6 when it was the newest release. I had access to a computer lab of 30 identical P4 3.0 machines and was trying to get that all configured, but even with the documentation, couldn't figure it out. ____________ Linux laptop uptime: 1484d 22h 42m Ended due to UPS failure, found 14 hours after the fact
	ID: 1250034 ·

Ex Volunteer moderator Volunteer tester Send message Joined: 12 Mar 12 Posts: 2883 Credit: 1,159,581 RAC: 841	Message 1250041 - Posted: 22 Jun 2012, 17:36:25 UTC - in response to Message 1249935.
	There was a software tool called Parallel Virtual Machine by the University of Tennessee which allowed this. Once I connected a Bull/Mips minicomputer and a SUN SparcStation using this tool. Tullio That sounds neat. I will have to see if I can get that to work on some of my machines in the lab. Hopefully this is the software you were referring to? http://www.csm.ornl.gov/pvm/ What a neat little piece of software. This could be just what I was looking for to teach myself compiling in an educational manner. I think I'll hang on to this source. :-) ____________ -Dave #2 3.2.0-33
	ID: 1250041 ·

EPG Send message Joined: 3 Apr 99 Posts: 110 Credit: 10,315,137 RAC: 418	Message 1250500 - Posted: 23 Jun 2012, 17:38:15 UTC
	PVM, hehe i had to write program using it in the parallel programing class at univ. It worked :) Tried to run a program with 100 childs (that does nothing just hangs a few sec) on a dual Pentium Pro comp. It ran more than a half hour, and had 35 load :D ____________
	ID: 1250500 ·

Alex Storey Volunteer tester Send message Joined: 14 Jun 04 Posts: 448 Credit: 1,356,578 RAC: 1,375	Message 1252032 - Posted: 27 Jun 2012, 10:12:25 UTC
	Intel Xeon Phi steals top HPC tenders, more SKUs to come
	ID: 1252032 ·

Alex Storey Volunteer tester Send message Joined: 14 Jun 04 Posts: 448 Credit: 1,356,578 RAC: 1,375	Message 1252042 - Posted: 27 Jun 2012, 10:55:39 UTC - in response to Message 1252036.
	I got a question for you. Several years ago, around 1994-1995, I was getting in touch with Unix System V when making my studies at a local technical school here in town. There were budget constraints and there were only a few workstations that offered Unix, either by means of terminals which was remotely connected, or as complete workstations on their own. For the special lab, we only were able to used worn 386-based PC's. If you are an ordinary user and am using the console only (no graphics or multi-user/multi-tasking environment) and input the command sleep 30, the PC goes to sleep for that 30 seconds. But replace the command with sleep 30 & instead, making it a background process. What happens then? What if the environment is more advanced/sophisticated? How would this command appear as a running process? Finally, if you are root or superuser on a system, what may happen if you try running this command either by means of the console or in a graphical multi-user/multi-tasking environment? Possibly I am wrong here. Is someone testing AI software?
	ID: 1252042 ·

clive G1FYE Volunteer moderator Send message Joined: 4 Nov 04 Posts: 1284 Credit: 14,943,811 RAC: 2,626	Message 1252048 - Posted: 27 Jun 2012, 11:07:18 UTC - in response to Message 1252042.
	I got a question for you. Several years ago, around 1994-1995, I was getting in touch with Unix System V when making my studies at a local technical school here in town. There were budget constraints and there were only a few workstations that offered Unix, either by means of terminals which was remotely connected, or as complete workstations on their own. For the special lab, we only were able to used worn 386-based PC's. If you are an ordinary user and am using the console only (no graphics or multi-user/multi-tasking environment) and input the command sleep 30, the PC goes to sleep for that 30 seconds. But replace the command with sleep 30 & instead, making it a background process. What happens then? What if the environment is more advanced/sophisticated? How would this command appear as a running process? Finally, if you are root or superuser on a system, what may happen if you try running this command either by means of the console or in a graphical multi-user/multi-tasking environment? Possibly I am wrong here. Is someone testing AI software? If wanting to test simple unix/linux command inputs like that the best way is to go ahead and do it, and see what happens :¬)
	ID: 1252048 ·

Khangollo Send message Joined: 1 Aug 00 Posts: 240 Credit: 35,363,419 RAC: 74,901	Message 1252052 - Posted: 27 Jun 2012, 11:19:13 UTC - in response to Message 1252036. Last modified: 27 Jun 2012, 11:31:37 UTC
	If you are an ordinary user and am using the console only (no graphics or multi-user/multi-tasking environment) and input the command sleep 30, the PC goes to sleep for that 30 seconds. Actually, "sleep" doesn't make PC go to sleep. It is simply a process that executes for the given time (while not cunsuming any CPU cycles), then exits. It is commonly used in scripts (without &) to add artificial delays. But replace the command with sleep 30 & instead, making it a background process. What happens then? It simply launches process in the background (that does absolutely nothing) where it exists for the given number of seconds then exits. If you use it in a script like this (with &) it of course doesn't add delay to a script, because the script will continue executing while sleep is executing in the background, detached from the parent process. (Oh, and non-multitasking OS wouldn't support any kind of launching into background anyway, except specially programmed processes - like drivers/memory resident programs - like in DOS). What if the environment is more advanced/sophisticated? How would this command appear as a running process? It's a process like any other program, with its own PID (process ID) and name "sleep N" (N = seconds). Finally, if you are root or superuser on a system, what may happen if you try running this command either by means of the console or in a graphical multi-user/multi-tasking environment? Makes no difference. "sleep" process will simply exist under root credentials. ____________
	ID: 1252052 ·

HAL9000 Volunteer tester Send message Joined: 11 Sep 99 Posts: 3279 Credit: 76,804,781 RAC: 78,315	Message 1252082 - Posted: 27 Jun 2012, 13:17:48 UTC - in response to Message 1252042.
	I got a question for you. Several years ago, around 1994-1995, I was getting in touch with Unix System V when making my studies at a local technical school here in town. There were budget constraints and there were only a few workstations that offered Unix, either by means of terminals which was remotely connected, or as complete workstations on their own. For the special lab, we only were able to used worn 386-based PC's. If you are an ordinary user and am using the console only (no graphics or multi-user/multi-tasking environment) and input the command sleep 30, the PC goes to sleep for that 30 seconds. But replace the command with sleep 30 & instead, making it a background process. What happens then? What if the environment is more advanced/sophisticated? How would this command appear as a running process? Finally, if you are root or superuser on a system, what may happen if you try running this command either by means of the console or in a graphical multi-user/multi-tasking environment? Possibly I am wrong here. Is someone testing AI software? Google is actually. Google simulates the human brain with 1000 machines, 16000 cores and a love of cats With compute cards maybe they could have cut that down to 250 machines. ____________ SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the BP6/VP6 User Group today!
	ID: 1252082 ·

Ex Volunteer moderator Volunteer tester Send message Joined: 12 Mar 12 Posts: 2883 Credit: 1,159,581 RAC: 841	Message 1252149 - Posted: 27 Jun 2012, 17:13:43 UTC - in response to Message 1252048. Last modified: 27 Jun 2012, 17:18:24 UTC
	double ____________ -Dave #2 3.2.0-33
	ID: 1252149 ·

Ex Volunteer moderator Volunteer tester Send message Joined: 12 Mar 12 Posts: 2883 Credit: 1,159,581 RAC: 841	Message 1252150 - Posted: 27 Jun 2012, 17:15:22 UTC - in response to Message 1252048. Last modified: 27 Jun 2012, 17:16:34 UTC
	If wanting to test simple unix/linux command inputs like that the best way is to go ahead and do it, and see what happens :¬) yes, sure, as long as those inputs don't include "rm" or "rm -r"... recalls lessons learned the hard way And on that note: "sleep 30&" will only force that background process to sleep, nothing else will be affected. so "sleep 30&" does nothing. but "sleep 30; <some other command> &" will do something, in 30 seconds... ____________ -Dave #2 3.2.0-33
	ID: 1252150 ·

Ex Volunteer moderator Volunteer tester Send message Joined: 12 Mar 12 Posts: 2883 Credit: 1,159,581 RAC: 841	Message 1252154 - Posted: 27 Jun 2012, 17:21:36 UTC Last modified: 27 Jun 2012, 17:25:45 UTC
	I think Intel has their work cut out for them... They just better hope that they can peak their performance, and grow the technology fast enough and cheap enough to compete with everything else going on right now. I think with more cores, more RAM, and reduced price, they'd get their share of the market, and fast. But I think the cost of these things will be keeping them out of the home HP computing market. ____________ -Dave #2 3.2.0-33
	ID: 1252154 ·

tullio Send message Joined: 9 Apr 04 Posts: 2905 Credit: 259,140 RAC: 300	Message 1252187 - Posted: 27 Jun 2012, 17:59:45 UTC - in response to Message 1252154.
	I am sure that some SETI@home volunteer will buy them just to show how good he is. See "The theory of the leisure class" by Thorstein Veblen. This he called "conspicuous consumption". Tullio ____________
	ID: 1252187 ·

Alex Storey Volunteer tester Send message Joined: 14 Jun 04 Posts: 448 Credit: 1,356,578 RAC: 1,375	Message 1270187 - Posted: 11 Aug 2012, 0:09:48 UTC
	Another Phi revision: Intel Xeon Phi (B0 Stepping): The Knight in Shining Armor? And some Quadro news that reveals a lot about the NVIDIA Tesla K20 card (aka GK110, aka Big Kepler, aka the-card-that-could-have-been-the-GTX-680-maybe) NVIDIA Announces Kepler-Based Quadro K5000 & Second-Generation Maximus NVIDIA Maximus Fuels Workstation Revolution With Kepler Architecture Can the New Nvidia Quadro K5000 Become the Most Profitable Graphics Card?
	ID: 1270187 ·

Alex Storey Volunteer tester Send message Joined: 14 Jun 04 Posts: 448 Credit: 1,356,578 RAC: 1,375	Message 1272912 - Posted: 19 Aug 2012, 12:35:14 UTC
	Intel's "MIC" Xeon Phi die has 62 cores, and was aimed for clocks much higher than 1GHz to fight Nvidia GK110
	ID: 1272912 ·

Alex Storey Volunteer tester Send message Joined: 14 Jun 04 Posts: 448 Credit: 1,356,578 RAC: 1,375	Message 1296516 - Posted: 18 Oct 2012, 13:55:02 UTC - in response to Message 1252042.
	Nvidia's Top End Kepler Unveiled: Tesla K20 Comes with Disappointing Specs, Performance
	ID: 1296516 ·

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Message boards : Number crunching : Xeon Phi (aka Knights Corner, MIC)