-----INPUT/OUTPUT FILE DEFINITIONS FOR LEVAL AND LEVEC----- Below is a listing of the input/output files which are accessed by the real symmetric Lanczos eigenvalue program, LEVAL. Included also is a sample of the input file which LEVAL requires on file 5. The parameters supplied in this file are in free format. LEVAL computes eigenvalues of real symmetric matrices on user-specified intervals. SAMPLE DEFINITIONS OF THE INPUT/OUTPUT FILES FOR LEVAL ------------------------------------------------------------------ *LEVAL EXEC LANCZOS EIGENVALUE CALCULATION REAL SYMMETRIC MATRICES FI 06 TERM FILEDEF 1 DISK &1 NHISTORY A (RECFM F LRECL 80 BLOCK 80 FILEDEF 2 DISK &1 HISTORY A (RECFM F LRECL 80 BLOCK 80 FILEDEF 3 DISK &1 GOODEV A (RECFM F LRECL 80 BLOCK 80 FILEDEF 4 DISK &1 ERRINV A (RECFM F LRECL 80 BLOCK 80 FILEDEF 5 DISK LEVAL INPUT A (RECFM F LRECL 80 BLOCK 80 FILEDEF 8 DISK &1 INPUT A (RECFM F LRECL 80 BLOCK 80 FILEDEF 11 DISK &1 DISTINCT A (RECFM F LRECL 80 BLOCK 80 LOAD LEVAL LESUB LEMULT ------------------------------------------------------------------- SAMPLE INPUT FILE FOR LEVAL ------------------------------------------------------------------- LANCZOS EIGENVALUE COMPUTATIONS, NO REORTHOGONALIZATION TEST MATRIX LINE 1 N KMAX NMEVS MATNO 143 429 1 706830 LINE 2 SVSEED RHSEED MXINIT MXSTUR 7892713 147935 5 100000 LINE 3 ISTART ISTOP 0 1 LINE 4 IHIS IDIST IWRITE 1 0 1 LINE 5 RELTOL (RELATIVE TOLERANCE IN 'COMBINING' GOODEV) .0000000001 LINE 6 MB(1) MB(2) MB(3) MB(4) (ORDERS OF T(1,MEV)) 190 LINE 7 NINT (NUMBER OF SUB-INTERVALS FOR BISEC) 1 LINE 8 LB(1) LB(2) LB(3) (INTERVAL LOWER BOUNDS) 0.0 LINE 9 UB(1) UB(2) UB(3) (INTERVAL UPPER BOUNDS) 1.001 ----------------------------------------------------------------- END INPUT OUTPUT DESCRIPTION FOR LEVAL _________________________________________________________________ Below is a listing of the input/output files which are accessed by the real symmetric Lanczos eigenvector program, LEVEC. Included also is a sample of the input file which LEVEC requires on file 5. The parameters are supplied in free format. LEVEC computes eigenvectors for each of a user-specified subset of the eigenvalues computed by the companion program LEVAL. SAMPLE DEFINITIONS OF THE INPUT/OUTPUT FILES FOR LEVEC ------------------------------------------------------------------ *LEVEC EXEC TO RUN LANCZOS EIGENVECTOR PROGRAM, REAL SYMMETRIC MATRICES FI 06 TERM FILEDEF 2 DISK &1 HISTORY A (RECFM F LRECL 80 BLOCK 80 FILEDEF 3 DISK &1 GOODEV A (RECFM F LRECL 80 BLOCK 80 FILEDEF 4 DISK &1 ERRINV A (RECFM F LRECL 80 BLOCK 80 FILEDEF 5 DISK LEVEC INPUT A (RECFM F LRECL 80 BLOCK 80 FILEDEF 8 DISK &1 INPUT A (RECFM F LRECL 80 BLOCK 80 FILEDEF 9 DISK &1 ERREST A (RECFM F LRECL 80 BLOCK 80 FILEDEF 10 DISK &1 BOUNDS A (RECFM F LRECL 80 BLOCK 80 FILEDEF 11 DISK &1 TEIGVECS A (RECFM F LRECL 80 BLOCK 80 FILEDEF 12 DISK &1 RITZVECS A (RECFM F LRECL 80 BLOCK 80 FILEDEF 13 DISK &1 PAIGE A (RECFM F LRECL 80 BLOCK 80 LOAD LEVEC LESUB LEMULT ------------------------------------------------------------------- SAMPLE INPUT FILE FOR LEVEC ------------------------------------------------------------------- LEVEC REAL SYMMETRIC EIGENVECTOR COMPUTATIONS, NO REORTHOGONALIZATION LINE 1 MDIMTV MDIMRV MBETA(MAX.DIMENSIONS, TVEC, RITVEC AND BETA 10000 10000 2000 LINE 2 RELTOL .0000000001 LINE 3 MBOUND NTVCON SVTVEC IREAD (FLAGS 0 1 0 1 LINE 4 TVSTOP LVCONT ERCONT IWRITE (FLAGS 0 1 1 1 LINE 5 RHSEED (RANDOM GENERATOR SEED FOR STARTING VECTOR IN INVERM) 45329517 LINE 6 MATNO N 100 100 -------------------------------------------------------------------------