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oai:drum.lib.umd.edu:1903/69562016-03-29T06:00:09Zcom_1903_2234com_1903_1654com_1903_2col_1903_2765col_1903_3

Barua, Rajeev Nguyen, Nghi Digital Repository at the University of Maryland University of Maryland (College Park, Md.) Electrical Engineering 2007-06-22T05:38:20Z 2007-06-22T05:38:20Z 2007-05-07 http://hdl.handle.net/1903/6956 This paper presents the first memory allocation scheme for embedded systems having a scratch-pad memory(SPM) whose size is unknown at compile-time. All existing memory allocation schemes for SPM require the SPM size to be known at compile-time; therefore tie the resulting executable to that size of SPM and not portable to other platforms having different SPM sizes. As size-portable code is valuable in systems supporting downloaded codes, our work presents a compiler method whose esulting executable is portable across SPMs of any size. Our technique is to employ a customized installer software, which decides the SPM allocation just before the program's first run, then modifies the program executable accordingly to implement the decided SPM allocation. Results show that our benchmarks average a 41% speedup versus an all-DRAM allocation, with overheads of 1.5% in code-size, 2% in run-time, and 3% in compile-time for our benchmarks. Meanwhile, an unrealistic upper-bound is approximated only slightly faster at 45% better than all-DRAM. 452618 bytes application/pdf en_US Memory Allocation for Embedded Systems with a Compile-Time-Unknown Scratch-Pad Size Thesis Engineering, Electronics and Electrical Computer Science Memory Allocation Scratch-Pad Compiler Embedded Systems Downloadable Codes Embedded Loading Data Linked List open.access