Created
April 5, 2023 15:12
-
-
Save staticfloat/494272e86b44a3e2d31de898473b3c64 to your computer and use it in GitHub Desktop.
Accelerate NEWLAPCK dpstrf bug
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#include <stdio.h> | |
#include <stdint.h> | |
#ifdef ILP64 | |
typedef int64_t blasint; | |
#else | |
typedef int32_t blasint; | |
#endif | |
extern blasint dpstrf(char *, blasint *, double *, blasint *, blasint *, blasint *, double *, double*, long*); | |
#define N 4 | |
int main() | |
{ | |
blasint pivot[N]; | |
long info; | |
double A[N][N]; | |
double work[2*N]; | |
blasint order = N; | |
blasint rank = 0; | |
blasint lda = N; | |
blasint stride = 1; | |
double tol = 0.0; | |
// Initialize `A` with known values (transposed into FORTRAN ordering) | |
A[0][0] = 3.4291134; A[1][0] = -0.61112815; A[2][0] = 0.8155207; A[3][0] = -0.9183448; | |
A[0][1] = -0.61112815; A[1][1] = 3.1250076; A[2][1] = -0.44400603; A[3][1] = 0.97749346; | |
A[0][2] = 0.8155207; A[1][2] = -0.44400603; A[2][2] = 0.5413656; A[3][2] = 0.53000593; | |
A[0][3] = -0.9183448; A[1][3] = 0.97749346; A[2][3] = 0.53000593; A[3][3] = 5.108155; | |
// find solution using LAPACK routine dpstrf, all the arguments have to | |
// be pointers and you have to add an underscore to the routine name | |
dpstrf("U", &order, &A[0][0], &lda, &pivot[0], &rank, &tol, &work[0], &info); | |
if (info != 0) { | |
printf("ERROR: info == %ld!\n", info); | |
return 1; | |
} | |
// Print out diagonal of A | |
printf("diag(A):"); | |
for (blasint j=0; j<N; j++) { | |
printf(" %8.4f", A[j][j]); | |
} | |
printf("\n"); | |
return 0; | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
all: run | |
dpstrf_newlapack: dpstrf_test.c | |
$(CC) -o $@ -Ddpstrf='dpstrf$$NEWLAPACK' dpstrf_test.c -framework Accelerate | |
dpstrf_newlapack_ilp64: dpstrf_test.c | |
$(CC) -o $@ -Ddpstrf='dpstrf$$NEWLAPACK$$ILP64' -DILP64 dpstrf_test.c -framework Accelerate | |
dpstrf_oldlapack: dpstrf_test.c | |
$(CC) -o $@ -Ddpstrf='dpstrf_' dpstrf_test.c -framework Accelerate | |
run: dpstrf_newlapack dpstrf_newlapack_ilp64 dpstrf_oldlapack | |
./dpstrf_newlapack | |
./dpstrf_newlapack_ilp64 | |
./dpstrf_oldlapack |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment