Hewlett-packard Development Company, L.P.

Daniel G Tormey

Joe Bolding

Janis Delmonte

Ron Gilbert, Jr

Matt Jacunski

Embodiments include methods, apparatus, and systems for controlling multiple simulations. One embodiment is a method that includes executing plural architectural simulators being interconnected to form a platform for hardware simulation; placing at least one of the plural architectural simulators into a pause state; and automatically minimizing windows associated with the at least one of the plural architectural simulators.

Method and apparatus for controlling multiple simulations

In one embodiment, a method for evaluating code usage includes monitoring instructions executed by a processor, counting instances of execution of each instruction, correlating the executed instructions with source code instructions, and providing an indication of source code usage to a user.

Systems and methods for evaluating code usage

A system and method for increasing performance in a simulator environment operable to simulate a multiprocessor platform with program code running thereon. A set of processors are initialized upon instantiating the simulator environment on a host machine for executing the program code instructions. Code execution on a simulated processor is suspended by executing a simulator API routine which is called when the program code is to enter an idle state. The host resources that would otherwise have been spent on the processor running the idle loops are therefore conserved for use by the remaining processors.

System and method for increasing performance in multi-CPU simulation

A system and method for increasing Operating System (OS) idle loop performance in a simulator environment. Upon encountering an OS idle loop condition on a processor, OS program flow is skipped ahead by an amount of time, thereby conserving the host machine's resources that would otherwise have been spent in supporting the OS idle loop execution. If another processor initiates an inter-processor message directed to a processor whose OS program flow has been skipped forward, that processor is capable of skipping backward in time, if necessary, to service the inter-processor message.

System and method for increasing OS idle loop performance in a simulator

Simulated computer hardware is differentiated from physical computer hardware for user code by detecting a sequence of instructions which produce no effect on physical computer hardware but which set a flag on simulated computer hardware. User code may thus issue the sequence of instructions, then check the flag to determine whether it is executing on simulated hardware or physical hardware.

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Rockwell, TX, United States of America

Daniel G Tormey