Hi,
I tried to determine the linpack mflops value on p4 arch with latest pgi compiler. However, I got “inf” all the time, no matter how large the matrix size is. hereafter the simple compilation flags adopted:
FC = pgf90 -fastsse -tp p7 -Minfo=all
CC = pgf90 -fastsse -tp p7 -Minfo=all
std log of linpack:
norm. resid resid machep x(1) x(n)
6.49150133E+00 7.20701276E-13 2.22044605E-16 1.00000000E+00 1.00000000E+00
times are reported for matrices of order 1000
factor solve total mflops unit ratio
times for array with leading dimension of1001
0.000E+00 0.000E+00 0.000E+00 inf 0.000E+00 0.000E+00
any suggestion?
Thanks in advance.
BR,
J