Questions tagged [multicore]

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guesstimate max current of a domestic appliance

The appliance is a quartz oven, 1000W @ 250V. I am trying to obtain a max transient figure for the current (no oscilloscope on my bench). Opened the oven and checked the writings on various parts - ...
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1answer
138 views

Why disable interrupt is time-consuming in multi-processor computer?

I have a book statement: Disabling interrupt is time-consuming in multi-processor system. I suspect that this is related to the hardware implementation of how interrupt is enabled/disabled. So ...
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3answers
3k views

Is it true that on a modern processor, parallelism is possible on a single core?

Final Edit: I just realized that when use the word "parallelism", it's almost parallelism==ILP, I originally thought even a single instruction could be divided into ...
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1answer
153 views

Multicore ARM how to assign a critical task to one dedicated core [closed]

Suppose I have a multicore ARM processor (to make it simple assume 2 cores with an unshared cache between the 2 cores). Suppose my system contains a critical task and several non-critical tasks. ...
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1answer
128 views

multiprocessor programming and memory management [closed]

I'm working for a project (an embedded storage system) that requires to increase a memory access speed using a multiprocessors programming, so that we can execute a memory access program (storing data)...
2
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1answer
2k views

On which core on a multi core CPU is the ISR called?

When a multi core CPU is interrupted, the PC will be changed to point to the corresponding entry in the interrupt vector at the next instruction fetch. On a CPU having more than one core (e.g. modern ...
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2answers
2k views

Do multi-core processors reduce power consumption?

I have been reading some tutorials about power consumption on parallelized system. I have been following this tutorial. Tim Mattson (Intel): Introduction to OpenMP: 02 part 1 Module 1, YouTube At ...
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2answers
160 views

Multi-core processor and Real Time [closed]

Is it a good idea to design a real time system on a multicore processor? Task's execution time isn't determinist in these kind of processor because of core management. This makes scheduler's ...