By Manish Verma, Peter Marwedel
This publication proposes novel reminiscence hierarchies and software program optimization options for the optimum usage of reminiscence hierarchies. It offers quite a lot of optimizations, steadily expanding within the complexity of study and of reminiscence hierarchies. the ultimate bankruptcy covers optimization thoughts for purposes such as a number of methods present in latest embedded devices.
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Additional info for Advanced Memory Optimization Techniques for Low Power Embedded Processors
This is because the larger the scratchpad, the more memory objects are allocated and the less are the accesses to the slow and energy inefficient main memory. On a closer look, it is observed that the energy and execution values decrease in a stepwise manner. 4(b), the energy consumption values remain the same for 100 bytes and 128 bytes scratchpad. This behavior emerges due to granularity of the SA approach. For uni-processor ARM setup, the SA approach allocates traces, functions and global variables to the scratchpad.
The execution time in CPU cycles and the energy dissipation of the processor and the memory hierarchy. In the following, we briefly describe the memory hierarchy simulator. Memory Hierarchy Simulator: In order to efficiently simulate different memory hierarchy configurations, a flexible memory hierarchy simulator (MEMSIM) was developed. While a variety of cache simulators is available, none of them seemed suitable for an in-depth exploration of the design space of a memory hierarchy. g. the loop caches, is required.
Any access to the 4k address region is translated to a scratchpad access, whereas any other address access is mapped to the main memory. We utilize this property to relax the scratchpad allocation problem such that a maximum of one memory object can be fractionally allocated to the scratchpad memory. We term the relaxed problem as the fractional scratchpad allocation (Frac. SA) problem. 1 depicts the scenario when an array A is partially allocated to the scratchpad memory. It should be noted that this seamless scratchpad and main memory accesses may not be available in all systems.