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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
Consider again that T is stored in column major format, what is the main memory hit ratio?
Solution
In column major format, elements of each column are stored continuously.
Each column has 17 elements.
Total elements:
$17 \times 1024 = 17408$
Page size = 1024 words
Total pages:
$\frac{17408}{1024}=17$
Since access is column-wise, memory access is almost sequential.
Only 1 page fault occurs per page.
Total page faults = 17
Total memory references = 17408
Hits:
$17408 - 17 = 17391$
Hit ratio:
$\frac{17391}{17408} \times 100 \approx 99.9%$
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