CUDALucas (a.k.a. MaclucasFFTW/CUDA 2.3/CUFFTW)

[chalsall]

Originally Posted by Dubslow

Do you?

Yes.

[Dubslow]

Originally Posted by chalsall

Yes.

And it's not something that would make Linux crash...? Did you use a debugger, or just look at the code and find it?

------------------------

How about you tell flash so he can fix it, while I try and figure it out...?

[chalsall]

Originally Posted by Dubslow

And it's not something that would make Linux crash...? Did you use a debugger, or just look at the code and find it?

------------------------

How about you tell flash so he can fix it, while I try and figure it out...?

Dubslow... There is no benefit in the teacher telling the student the answer.

What is the sound of one hand clapping?

[Dubslow]

Originally Posted by LaurV

If worktodo ...contains garbage, then it exists normally with "No valid assignment found".

With garbage, can you make "No Test=" or "invalid format" or "invalid data" appear?

(For the last two, you could use 4 or more commas, or put a nonprime exponent or expo < 86423. E.g.:

bill@Gravemind:~/CUDALucas∰∂ CUDALucas

Warning: exponent is not prime!
Warning: ignoring line 1: >> Test=N/A,25136458,69,1
in "worktodo.txt". Reason: invalid data.
Continuing work from a partial result of M25866773 fft length = 1474560 iteration = 1988865

)

[Batalov]

Originally Posted by chalsall

Dubslow... There is no benefit in the teacher telling the student the answer.

I thought I was alone occasionally "being John Malkovich".

[chalsall]

Originally Posted by Batalov

I thought I was alone occasionally "being John Malkovich".

Actually, I was channeling my "inner Mr. R. D. Silverman" when I wrote that.

But any uptight pedantic would do....

[LaurV]

With the contents of the file being:

Test=N/A,216091
Test=N/A,756839
Test=N/A,500009
Test=N/A,859433

I got

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

e:\CudaLucas>cl2024020x64 -d 0

------- DEVICE 0 -------
name                GeForce GTX 580
totalGlobalMem      1610612736
sharedMemPerBlock   49152
regsPerBlock        32768
warpSize            32
memPitch            2147483647
maxThreadsPerBlock  1024
maxThreadsDim[3]    1024,1024,64
maxGridSize[3]      65535,65535,65535
totalConstMem       65536
Compatibility       2.0
clockRate (MHz)     1564
textureAlignment    512
deviceOverlap       1
multiProcessorCount 16

Warning: ignoring line 1 in "worktodo.txt"! Reason: invalid format
Warning: ignoring line 2 in "worktodo.txt"! Reason: invalid format
Warning: ignoring line 3 in "worktodo.txt"! Reason: invalid format
Warning: ignoring line 4 in "worktodo.txt"! Reason: invalid format
No valid assignment found.

then adding a comma after the third line I got

e:\CudaLucas>cl2024020x64 -d 0

------- DEVICE 0 -------
name                GeForce GTX 580
totalGlobalMem      1610612736
sharedMemPerBlock   49152
regsPerBlock        32768
warpSize            32
memPitch            2147483647
maxThreadsPerBlock  1024
maxThreadsDim[3]    1024,1024,64
maxGridSize[3]      65535,65535,65535
totalConstMem       65536
Compatibility       2.0
clockRate (MHz)     1564
textureAlignment    512
deviceOverlap       1
multiProcessorCount 16

Warning: ignoring line 1 in "worktodo.txt"! Reason: invalid format
Warning: ignoring line 2 in "worktodo.txt"! Reason: invalid format

and the crash follows in about 1-2 seconds

[moebius]

Originally Posted by msft

$ ./CUDALucas -threads 512 332220523
DEVICE:0------------------------
name                GeForce GTX 550 Ti
totalGlobalMem      1072889856
...
start M332220523 fft length = 18874368
err = 0.35937, increasing n from 18874368
 
start M332220523 fft length = 18874368
err = 0.35937, increasing n from 18874368
 
start M332220523 fft length = 20971520
Iteration 10000 M( 332220523 )C, 0x1a313d709bfa6663, n = 20971520, CUDALucas v1.66 err = 0.03358 (22:30 real, 134.9292 ms/iter, ETA 12451:20:29)
Iteration 20000 M( 332220523 )C, 0x73dc7a5c8b839081, n = 20971520, CUDALucas v1.66 err = 0.03358 (22:26 real, 134.5456 ms/iter, ETA 12415:34:17)

just started....

>CUDALucas2.01.cuda4.0.sm_21.x64.exe -threads 512 332XXXXXX

start M332XXXXXX fft length = 16777216 iteration = 22 < 1000 && err = 0.28125 >= 0.25, increasing n from 16777216

start M332XXXXXX fft length = 18874368 iteration = 29 < 1000 && err = 0.265625 >= 0.25, increasing n from 18874368

start M332XXXXXX fft length = 20971520
Iteration 10000 M( 332XXXXXX )C, 0x9786a346ab86fc52, n = 20971520, CUDALucas v2.01 err = 0.03516 (11:02 real, 66.2000 ms/iter, ETA 6108:47:24)

[Dubslow]

Originally Posted by Dubslow

I'll run it through with -O0 and see if anything appears there.

Piddly squat. I await flash's report. I'm stumped. (chalsall, for the sake of the software, could you please PM/tell flash what to fix so that it works?)

[kjaget]

You're calling strcpy_s with the wrong arguments. This is a problem on the strcopy call on line 230 specifically, and maybe other places. Note how the strcpy_s fails when the source is too long compared to strncpy

Also, you might want to change the vars which hold the exponent to unsigned values since you're filling them with strtoul.

[chris2be8]

Originally Posted by Dubslow

And it's not something that would make Linux crash...? Did you use a debugger, or just look at the code and find it?

If code behaves differently on Linux and Windows the first thing to check is that lines end with crlf on Windows and lf on Linux. Try running unix2dos against the config file on Linux and see what happens.

Chris