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Input File for Testing the Linear Equation Routines

From the test program's input file, one can control the size of the test matrices, the block size and crossover point for the blocked routines, the paths to be tested, and the matrix types used in testing. We have set the options in the input files to run through all of the test paths. An annotated example of an input file for the REAL test program is shown below.

Data file for testing REAL LAPACK linear eqn. routines
7                      Number of values of M
0 1 2 3 5 10 16        Values of M (row dimension)
7                      Number of values of N
0 1 2 3 5 10 16        Values of N (column dimension)
3                      Number of values of NRHS
1 2 15                 Values of NRHS (number of right hand sides)
5                      Number of values of NB
1 3 3 3 20             Values of NB (the blocksize)
1 0 5 9 1              Values of NX (crossover point)
30.0                   Threshold value of test ratio
T                      Put T to test the LAPACK routines
T                      Put T to test the driver routines
T                      Put T to test the error exits
SGE   11               List types on next line if 0 < NTYPES < 11
SGB    8               List types on next line if 0 < NTYPES <  8
SGT   12               List types on next line if 0 < NTYPES < 12
SPO    9               List types on next line if 0 < NTYPES <  9
SPP    9               List types on next line if 0 < NTYPES <  9
SPB    8               List types on next line if 0 < NTYPES <  8
SPT   12               List types on next line if 0 < NTYPES < 12
SSY   10               List types on next line if 0 < NTYPES < 10
SSP   10               List types on next line if 0 < NTYPES < 10
STR   18               List types on next line if 0 < NTYPES < 18
STP   18               List types on next line if 0 < NTYPES < 18
STB   17               List types on next line if 0 < NTYPES < 17
SQR    8               List types on next line if 0 < NTYPES <  8
SRQ    8               List types on next line if 0 < NTYPES <  8
SLQ    8               List types on next line if 0 < NTYPES <  8
SQL    8               List types on next line if 0 < NTYPES <  8
SQP    6               List types on next line if 0 < NTYPES <  6
STZ    3               List types on next line if 0 < NTYPES <  3
SLS    6               List types on next line if 0 < NTYPES <  6
SEQ

The first 11 lines of the input file are read using list-directed input and are used to specify the values of M, N, NB, and THRESH (the threshold value). Lines 12-14 specify if the LAPACK routines, the driver routines, or the error exits are to be tested. The remaining lines occur in sets of 1 or 2 and allow the user to specify the matrix types. Each line contains a 3-character path name in columns 1-3, followed by the number of test matrix types. If the number of matrix types is omitted, as in the above example for SEQ, or if a character is encountered before an integer, all the possible matrix types are tested. If the number of matrix types is at least 1 but is less than the maximum number of possible types, a second line will be read to get the numbers of the matrix types to be used. For example, the input line

SGE    11
requests all of the matrix types for path SGE, while
SGE    3
 4 5 6
requests only matrices of type 4, 5, and 6.

When the tests are run, each test ratio that is greater than or equal to the threshold value causes a line of information to be printed to the output file. The first such line is preceded by a header that lists the matrix types used and the tests performed for the current path. A sample line for a test from the SGE path that did not pass when the threshold was set to 117#117 is

M =    4, N =    4, NB =   1, type  2, test( 13 ) =   1.14270

To get this information for every test, set the threshold to zero. After all the unsuccessful tests have been listed, a summary line is printed of the form

SGE:     11 out of   1960 tests failed to pass the threshold

If all the tests pass the threshold, only one line is printed for each path:

All tests for SGE passed the threshold (  1960 tests run)


next up previous contents
Next: Testing the Eigenproblem Balancing Up: The Linear Equation Test Previous: Tests for the Equilibration   Contents
Susan Blackford 2001-08-13