 random number generation, generating random numbers in CUDA |
 Mar 20 2007, 10:45 PM
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 Group: Members Posts: 28 Joined: 5-March 07 Member No.: 43,865 Org.: upenn  |
I'm trying to generate a random seed value for the srand function in a kernel I'm running, but I keep getting an error. This code:
CODE srand(time(NULL)); float r = rand(); produces the error: ".\simpleGL_kernel.cu", line 67: error: expression must have (pointer-to-) function type srand(time(0)); Is the time function not accessible in a kernel? I wasn't having any problems with srand or rand, only time. If time is not usable, does anyone have a suggestion for generating random seeds? -skiz |
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Posts in this topic
thepolishpistol random number generation Mar 20 2007, 10:45 PM
JaredHoberock Pretty sure time() wouldn't be callable in a k... Mar 20 2007, 10:53 PM
seibert QUOTE(JaredHoberock @ Mar 20 2007, 05:53 PM)P... Mar 21 2007, 01:11 AM JaredHoberock QUOTE(seibert @ Mar 20 2007, 07:11 PM)You pro... Mar 21 2007, 03:25 AM thepolishpistol QUOTE(seibert @ Mar 20 2007, 09:11 PM)And eve... Mar 21 2007, 04:50 AM tachyon_john Friends don't let friends use rand()... :-)
S... Mar 21 2007, 05:17 AM seibert QUOTE(tachyon_john @ Mar 21 2007, 12:17 AM)Se... Mar 21 2007, 12:51 PM thepolishpistol QUOTE(seibert @ Mar 21 2007, 08:51 AM)This wo... Mar 21 2007, 03:50 PM tachyon_john Yeah, I think it would be a fun project to take th... Mar 21 2007, 07:28 PM jhanweck I've implemented a highly efficient (if not hi... Mar 21 2007, 02:21 PM osiris I too am evaluating/designing a port onto the G80 ... Apr 22 2007, 11:28 PM bbudge QUOTE(osiris @ Apr 22 2007, 03:28 PM)I too am... Apr 23 2007, 03:38 AM FangQ hi
I am looking for a random number generator for... Feb 20 2009, 03:52 PM FangQ QUOTE (FangQ @ Feb 20 2009, 10:52 AM) hi
... Feb 20 2009, 04:23 PM osiris Yep, that's exactly it! One could do up to... Apr 23 2007, 05:03 AM bbudge QUOTE(osiris @ Apr 22 2007, 09:03 PM)Yep, tha... Apr 23 2007, 06:39 PM bbudge I've had a request for seeding this thing. He... Apr 23 2007, 07:11 PM osiris Hi Brian, Just as a coda... my expression of the c... Apr 25 2007, 01:46 AM bbudge QUOTE(osiris @ Apr 24 2007, 05:46 PM)
Now I d... Apr 25 2007, 02:27 AM osiris Ooops - and mine runs 8,8,6... On the last questio... Apr 25 2007, 02:49 AM bbudge QUOTE(osiris @ Apr 24 2007, 06:49 PM)Ooops - ... Apr 25 2007, 03:58 AM osiris Hi Brian, I think that there is a requirement that... Apr 25 2007, 06:11 AM osiris Hi Brian, well we both got it wrong! I am surp... Apr 29 2007, 02:56 AM bbudge QUOTE(osiris @ Apr 28 2007, 06:56 PM)Hi Brian... Apr 30 2007, 05:31 AM osiris Hi Brian, the reason you have not seen problems is... Apr 30 2007, 08:04 AM osiris Here it is multithreaded C original Mersenne Twi... May 6 2007, 08:54 PM osiris The web interface dropped the file with a ".c... May 6 2007, 09:00 PM mfatica Thanks Eric, nice job !!!
If you coul... May 6 2007, 11:32 PM osiris Thanks, Massimiliano. The only code you need is a ... May 7 2007, 02:20 AM osiris No comments yet, however I thought it worthwhile r... May 24 2007, 07:48 AM osiris Pretty much done now: I have some feedback on the ... Jun 2 2007, 01:00 AM osiris Thought I should post an update for V1.0 and also ... Jul 2 2007, 11:21 AM lutorm Hey all,
Just started playing with CUDA to eventu... Sep 3 2007, 09:05 PM vpodlozhnyuk QUOTE(lutorm @ Sep 4 2007, 12:05 AM)Hey all,
... Sep 3 2007, 09:59 PM lutorm QUOTE(vpodlozhnyuk @ Sep 3 2007, 01:59 PM)It ... Sep 3 2007, 10:38 PM vpodlozhnyuk QUOTE(lutorm @ Sep 4 2007, 01:38 AM)Ok... I d... Sep 3 2007, 10:57 PM lutorm QUOTE(vpodlozhnyuk @ Sep 3 2007, 02:57 PM)Wel... Sep 4 2007, 01:35 AM vpodlozhnyuk QUOTE(lutorm @ Sep 4 2007, 04:35 AM)I see wha... Sep 4 2007, 08:11 AM osiris QUOTE(lutorm @ Sep 4 2007, 08:05 AM)Just star... Sep 4 2007, 01:48 AM vpodlozhnyuk QUOTE(osiris @ Sep 4 2007, 04:48 AM)Nvidia ch... Sep 4 2007, 07:51 AM osiris QUOTE(vpodlozhnyuk @ Sep 4 2007, 06:51 PM)Wel... Sep 4 2007, 08:28 AM lutorm QUOTE(osiris @ Sep 4 2007, 12:28 AM)Yeah... b... Sep 4 2007, 07:03 PM vpodlozhnyuk QUOTE(lutorm @ Sep 4 2007, 10:03 PM)So that e... Sep 4 2007, 07:24 PM osiris QUOTE(lutorm @ Sep 5 2007, 06:03 AM)Ok, I... Sep 5 2007, 02:01 AM vpodlozhnyuk QUOTE(osiris @ Sep 5 2007, 05:01 AM)This gets... Sep 5 2007, 02:52 PM osiris QUOTE(vpodlozhnyuk @ Sep 6 2007, 01:52 AM)If ... Sep 5 2007, 10:57 PM osiris Just for completeness, here is the dcmt19937 sampl... Sep 7 2007, 02:38 AM vpodlozhnyuk QUOTE(osiris @ Sep 7 2007, 05:38 AM)Just for ... Sep 7 2007, 03:39 PM lutorm QUOTE(osiris @ Sep 6 2007, 06:38 PM)Just for ... Sep 18 2007, 08:55 PM osiris Thanks, Victor.
I think you are a little confused... Sep 8 2007, 04:32 AM osiris Just a quick note to say that the library above is... Sep 15 2007, 08:47 AM osiris Yes, I left out the word "necessarily" -... Sep 19 2007, 12:14 AM lord_jake Dear all,
by chance we found this discussion abou... Oct 15 2007, 03:28 PM wumpus lord_jake: Your download gives a file not found er... Oct 16 2007, 02:05 PM lord_jake QUOTE(wumpus @ Oct 16 2007, 06:05 AM)lord_jak... Oct 22 2007, 08:11 AM asadafag To lord_jake:
0. What problem do you intend to sol... Oct 17 2007, 06:03 AM lord_jake QUOTE(asadafag @ Oct 16 2007, 10:03 PM)To lor... Oct 22 2007, 08:22 AM MisterAnderson42 Nose-Hoover and related thermostats are fully dete... Oct 17 2007, 02:04 PM asadafag QUOTENose-Hoover and related thermostats are fully... Oct 18 2007, 03:15 AM FangQ I put together a few subroutines found in this thr... Feb 21 2009, 01:09 AM pcrs Hi,
I thought it could be so simple just to genera... May 4 2009, 09:02 PM pcrs What a strange way to calculate the performance:
... May 8 2009, 10:11 PM neocortex So is the easiest way to generate random numbers u... Jul 2 2009, 08:44 PM  |
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