A program is ported from a single?core processor to a dual core processor and open MPI is used to parallelize it. It runs more slowly on the dual?core processor than on the single?core processor. Why?
What will be an ideal response?
If one processor is dedicated to controlling the parallel processing, that leaves the other processor on its own with no means of performing any actual parallelism. Consequently, when overheads are taken into account, the dualprocessor system can be slower than using a single processor.
You might also like to view...
In Access SQL statements, any table name or field name that has spaces must be enclosed in ________
A) Double Angle Brackets << >> B) Single Angle Brackets < > C) Parentheses ( ) D) Square brackets [ ]
rite a statement to initialize the variable count to the value 1.
What will be an ideal response?
Link tags are placed within the ____ tags of a Web page.
A. head B. title C. body D. form
Shapes can be used as design elements on slides
Indicate whether the statement is true or false