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SUMMARY: Questions about allocating all available memory to a program

Hi,
	Thanks to all you folks for promptly giving me various
	solutions.

	alan@xxxxxxxxxxxxxxxxxx
	ohad@xxxxxxxxxxxxxxxxxxxx
	sherwood@xxxxxxx
	pobrien@xxxxxxxxxxxxxxxxx
	mdegerness@xxxxxxxxxxxxxxxx
	ta.chung@xxxxxxxxxxxx
	szgyula@xxxxxxxxxxxxxxxxxx

	Actually there were three ways to lick the problem.
	
	1. Use the kernel param dfldsiz to a larger value 
	   and rebuild the kernel (default was 128M)

	2. Use the builtin  limit param in C-shell like user
	  environ, e.g limit datasize 400M or limit datasize 4096000000

	3. Use sysconfig to modify per proc data size in a stanza file
	e.g.
	 proc:
	 max-per-proc-data-size=your_new_value
	 max-per-proc-address-space=your_new_value
	 max-per-proc-stack-size=your_new_value

	 sysconfigdb -a -f your_stanza_file proc

	What I finally did was use the C-shell limit command. 
	The suggestion of modifying the dfldsiz in the kernel
	was good for individual workstations, where one or max
	two persons use the machine. In our case, I felt that
	a server where there could be a case when more that one 
	person needed to run a large job simultaneously, tweaking
	the kernel param was note good idea.

	The third solution, I am going to test on a spare Alpha
	box later in the week.

	Once again, Thanks folks for the prompt reply.

anil

;-------------Original Question-----------------------

Hi,
	I have a user who is using SAS under DU3.2b on an ALPHA2100
	with 2CPU and 512M of memory. This person wants to allocate
	approx 400M of memory and gets an error indicating only 112M
	of workspace could be only be allocated. 
	
	According to SAS the program will be able to use whatever amount of
	memory and other resources it gets.

	There is hardly an activity going on when the user on the
	machine. Is there a way to up the amount of memory a person
	can use ? There is ample swap space.
	The relevant information in the /sys/conf/MACHINENAME 
	is as follows:

	dfldsiz		134217728
	maxdsiz		1073741824
	dflsiz		2097152
	maxssiz		33554432
	maxusers	32
	mapentries	800


	Any help, suggestions

Anil Khullar
Graduate School and University Center
CUNY, New York NY 10036

PS: The actual SAS command and the error is appended too
;----------------------

NOTE: AUTOEXEC processing beginning; file is /usr/local/sas610/autoexec.sas.

NOTE: SAS initialization used:
      real time           0.21 seconds
      cpu time            0.21 seconds


NOTE: AUTOEXEC processing completed.

  1? proc iml worksize=400000000;

NOTE: Assuming that the number is given in bytes and not kilobytes.
NOTE: Could allocate only 112000000 bytes of work space, 400000000 bytes
      requested.
Worksize    = 112000000
Symbol size = 131056
IML Ready
  2? endsas;

Exiting IML.
NOTE: PROCEDURE IML used: