From WILOBE@IBM-SJ.ARPA Fri Feb 28 00:39:07 1986 Received: from IBM-SJ.ARPA (ibm-sj.arpa.ARPA) by anl-mcs.ARPA (4.12/4.9) id AA01670; Fri, 28 Feb 86 00:38:46 cst Date: Fri, 28 Feb 86 00:38:39 cst From: WILOBE@IBM-SJ.ARPA Message-Id: <8602280638.AA01670@anl-mcs.ARPA> Apparently-To: Status: RO -----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 -----------------------------------------------------------------