F77 - failed to set heap start after upgrade to DU4.0a

From: Martin Lally <mel1003_at_phy.cam.ac.uk>
Date: Tue, 3 Dec 1996 14:13:12 +0000 (GMT)

Dear All,


I have just upgraded to DU 4.0a from DU 3.2c and now some program that
use to run now stop with the error:

8480:abin.x: /sbin/loader: Fatal Error: set_program_attributes failed to set
heap start


I can reproduce the same result with a simple program that uses large arrays.
The test worked on a DU 3.2c machine with the same configuration.

Limit gives the same results on both machines (tcsh 6.06.00) except for
memory used which 1008 kbytes less on the bad machine.

                        Bad Machine Good Machine
        cputime unlimited unlimited
        filesize unlimited unlimited
        datasize 131072 kbytes 131072 kbytes
        stacksize 2048 kbytes 2048 kbytes
        coredumpsize unlimited unlimited
        memoryuse 250560 kbytes 249552 kbytes
        vmemoryuse 1048576 kbytes 1048576 kbytes
        descriptors 4096 4096

Size give:
        
        size g
        text data bss dec hex
        8192 8192 399992304 400008688 17d7a5f0

F77 Code:

      INTEGER NIN, NOUT, ARR
      PARAMETER (ARR = 9999999)
      DOUBLE PRECISION XI(ARR), XR(ARR), YI(ARR), YR(ARR)
      STOP
*
      END

Compiled with:

        f77 -o a a.f

Setting ARR to 3000000 it works setting higher gives compile errors.
While setting ARR to 3355000 and the program hangs then gives a
Segmentation fault.

ps output:

mel1003 10133 0.4 8.6 131M 22M ttyp5 U + 13:55:39 0:00.85 g


Any ideas ?


System configurations;

Hardware DEC ALPHA 600 5/266 256MB MEM 732MB Swap.

DU: BAD V4.0A (Rev. 464)
           GOOD V3.2C (Rev. 148)

F77 BAD V4.0
           GOOD V3.8


Martin.


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Received on Tue Dec 03 1996 - 16:42:58 NZDT

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