[7240] in Athena Bugs

home help back first fref pref prev next nref lref last post

vax 7.2R: macsyma

daemon@ATHENA.MIT.EDU (daemon@ATHENA.MIT.EDU)
Mon Mar 4 21:05:52 1991

From: jcchen@ATHENA.MIT.EDU
To: bugs@ATHENA.MIT.EDU
Date: Mon, 04 Mar 91 21:05:32 EST

System name:		aldous-huxley
Type and version:	CVAXSTAR 7.2R
Display type:		SM

What were you trying to do?
	used polysolve command to solve 4th order polynominal.
   then tried to substitute 'e22=e22, etc expressions in.

What's wrong:
    macsyma ran out of storage space, yet had much swap and storage
space left.  Eg, used unlimit command in xterm window macsyma started in.
(does this command affect macsyma?  does macsyma have its own limits?).


( this expression is many many screens along.)

        2               2  2                   2
 sqrt((a  - 2 a + 1) eap  q  + (6 a b d - 2 a b  + 4 a) q) + (2 a - 2) eap q,
[Storage space totally exhausted]
Space exhausted when allocating  list

Error during display

(c93)

Current memory alloc is ....
athena% ps -u
USER       PID %CPU %MEM   SZ  RSS TT STAT  TIME COMMAND
jcchen    9357  0.6  2.6  252  159 p0 S     0:09  (csh)
jcchen    9369  0.0 50.3 5121 3218 p1 I N  21:23  (macsyma.dmp)
jcchen    9540  0.0  1.7  135  100 p0 R     0:00  (ps)
athena% limit
cputime         unlimited
filesize        unlimited
datasize        16384 kbytes
stacksize       16384 kbytes
coredumpsize    unlimited
memoryuse       6295 kbytes

athena% /etc/pstat -s
12654k used (5138k text), 26684k free, 1601k wasted, 1568k missing
avail: 50*512k 1*256k 2*128k 2*64k 3*32k 4*16k 284*1k


what should have happened?

 prog should not crash since pstat says 26 M of swap left.
 Also, ps says macsyma used 5 M, and limit says can use
   16 M.

sorry for the poor formats.  had trouble saving this since the save
 would have exceed hard disk quota.



home help back first fref pref prev next nref lref last post