I have been running an assortment of GPIB, VXI and TCP/IP devices through in-house device drivers via VISA. These interfaces have been run for more years than I care to remember. One of our test computers rebooted at some point and since then I cannot get all the devices to initialize without getting the error "VISA: Insufficient system resources to perform necessary memory allocation". At the most I can get perhaps 8 out of 20 devices to initialize without error. Adding one more device causes the last successful device in the list of devices to report the error (not necessarily the last device added).
Bear in mind that there have been no changes to the driver software or to the types and quantities of equipment connected to the test computer at that point. The computer in question was found to have a bad power supply and two failed hard drives. Replacement equipment was installed and the software re-imaged from backups. The problem still occurs.
I don't know how I can get a sudden and continued failure and what could be causing it.
This is old software that has been in use for some time but was re-installed following the computer hardware replacements:
NICvisa ver 3.1 (NI-VISA for 32-bit Solaris)
NIpcigpib ver 2.3
NIpcimxi ver 2.1.0-2