Patrik

Osgnach

Age: 28

Mar
31
awarded Yearling
Dec
20
awarded Popular Question
Oct
21
awarded Tumbleweed
Oct
14
awarded Student
Oct
14
asked How to solve an overdetermined system of integral equations
Oct
14
asked 1D PDE decoupling
Apr
23
accepted OpenMP: synchronization inside parallel for
Apr
19
comment OpenMP: synchronization inside parallel for
the thread id is passed to f. the id is used to break the array p into chunks of equal size. What f does is irrelevant, but I'll add a sample
Apr
19
revised OpenMP: synchronization inside parallel for
added 148 characters in body
Apr
19
asked OpenMP: synchronization inside parallel for
Nov
26
comment Segfault on free()
Valgrind found the issue. A buffer overflow was overwriting the 16 magic bytes. I still don't understand why watch didn't catch this, though
Nov
26
accepted Segfault on free()
Nov
26
asked Segfault on free()
Nov
20
awarded Tumbleweed
Nov
15
comment iptables rules don't get restored
Can you write the contents of the executable you've created?
Nov
14
comment Parallel 2D Poisson solver
I've checked MKL for PDE. I can't use those functions because they require an uniform mesh
Nov
14
comment Parallel 2D Poisson solver
1) Last time I checked with a debugger, lapack did a transpose operation if the matrix was row-wise. 2) As far as I know, the conjugate gradient method can be applied only to symmetric and positive defined matrices
Nov
13
asked MKL: calling ?gbtrf
Nov
13
revised Parallel 2D Poisson solver
added 418 characters in body
Nov
13
comment Parallel 2D Poisson solver
MKL is a possible solution (btw, band matrices are stored row-wise or column-wise? I guess it's the second). I also believe that the current code is doing a band decomposition, but it's very old, without comments and no indication of what it is doing, so the sooner I get rid of it the happier I am. I've also updated the main question
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