Browse Prior Art Database

Remote Simulation Processor for Logic Simulation

IP.com Disclosure Number: IPCOM000038156D
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-31
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Bergman, SC: AUTHOR [+4]

Abstract

Disclosed is an effective method for using unused CPU time on remote CPU's. This method allows a batch run simulation on a remote machine. This simulation could be run at a lower priority than other jobs on a remote machine during offshift hours.

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Remote Simulation Processor for Logic Simulation

Disclosed is an effective method for using unused CPU time on remote CPU's. This method allows a batch run simulation on a remote machine. This simulation could be run at a lower priority than other jobs on a remote machine during offshift hours.

Large logic simulation runs require excessive amounts of CPU time. One way of solving the demands on CPU time is to purchase unused time on other CPU's in a connected network. This unused time might be offshift time (late hours at night) or in the unutilized prime time on other machines. An effective way of utilizing this remote CPU time is needed.

This method involves the following:

1. Packaging of test cases and simulation parameters for remote simulation runs. 2. Transmitting simulation packages to a remote machine via a network (such as VNET). 3. Providing tools neccessary to run simulation on a disconnected, unattended, remote machine. These tools schedule simulation to run in a way which does not interfere with the primary jobs running on the remote machine, (ie., simulation jobs run only on non-prime shift time and when CPU is not fully utilized). These tools start simulation based on the following: a. Time of day (specific hours of use) ie., 18:00 to 06:00 hrs

b. day of week ie., Saturday & Sunday simulations may run any time, Monday thru Friday run only during off- shift hours c. Load Utilization of CPU ie., Simulation may be run when CPU loading is 70% or less 4....