Method for finding local extrema of a set of values for a parallel processing element
First Claim
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1. A method of optimizing the operation of a processing element comprising:
- serially loading, on each clock cycle, values in odd positions within a set of values into a first register and values in even positions within said set into a second register;
determining a series of first extrema from said odd set when values in even positions are being loaded and saving a current value for said first extrema in a third register when a value in an odd position is being loaded;
determining a series of second extrema from said even set when values in odd positions are being loaded and saving a current value for said second extrema in a fourth register when a value in an even position is being loaded;
determining a local extrema from values in said third and fourth registers; and
storing said local extrema.
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Abstract
A method for finding a local extrema for a single processing element having a set of values associated therewith includes separating the set of values into an odd set of values and an even set of values, determining a first extrema from the odd set of values, determining a second extrema from the even set of values, and determining the local extrema from the first extrema and the second extrema. The first extrema is found by comparing each odd-numbered value in the set to each other odd-numbered value in the set and the second extrema is found by comparing each even-numbered value in the set to each other even-numbered value in the set.
396 Citations
19 Claims
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1. A method of optimizing the operation of a processing element comprising:
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serially loading, on each clock cycle, values in odd positions within a set of values into a first register and values in even positions within said set into a second register; determining a series of first extrema from said odd set when values in even positions are being loaded and saving a current value for said first extrema in a third register when a value in an odd position is being loaded; determining a series of second extrema from said even set when values in odd positions are being loaded and saving a current value for said second extrema in a fourth register when a value in an even position is being loaded; determining a local extrema from values in said third and fourth registers; and storing said local extrema. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A processing element, comprising:
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an arithmetic logic unit; condition logic responsive to said arithmetic logic unit; a plurality of registers connected to a bus and responsive to said arithmetic logic unit; a result pipeline responsive to said arithmetic logic unit; an interface; and register files connected between said interface and said result pipeline;
said processing element configured to;serially load, on each clock cycle, values in odd positions within a set of values into a first register and values in even positions within said set into a second register; said arithmetic logic unit determining a series of first extrema from said odd set when values in even positions are being loaded and saving a current value for said first extrema in a third register when a value in an odd position is being loaded; said arithmetic logic unit determining a series of second extrema from said even set when values in odd positions are being loaded and saving a current value for said second extrema in a fourth register when a value in an even position is being loaded; said arithmetic logic unit determining a local extrema from values in said third and fourth registers; and output said local extrema through said result pipeline and said interface. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification