High Performance Computing MCQ Questions and answers

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Q. A simple kernel for adding two integers: global void add( int a, int b, int c ) { c = a + b; } where global is a CUDA C keyword which indicates that:

(A) add() will execute on device, add() will be called from host
(B) add() will execute on host, add() will be called from device
(C) add() will be called and executed on host
(D) add() will be called and executed on device

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Q. If variable a is host variable and dev_a is a device (GPU) variable, to allocate memory to dev_a select correct statement:

(A) cudamalloc( &dev_a, sizeof( int ) )
(B) malloc( &dev_a, sizeof( int ) )
(C) cudamalloc( (void**) &dev_a, sizeof( int ) )
(D) malloc( (void**) &dev_a, sizeof( int ) )

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Q. If variable a is host variable and dev_a is a device (GPU) variable, to copy input from variable a to variable dev_a select correct statement:

(A) memcpy( dev_a, &a, size);
(B) cudamemcpy( dev_a, &a, size, cudamemcpyhosttodevice );
(C) memcpy( (void*) dev_a, &a, size);
(D) cudamemcpy( (void*) &dev_a, &a, size, cudamemcpydevicetohost );

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Q. Triple angle brackets mark in a statement inside main function, what does it indicates?

(A) a call from host code to device code
(B) a call from device code to host code
(C) less than comparison
(D) greater than comparison

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Q. Scaling Characteristics of Parallel Programs Ts is

(A) increase
(B) constant
(C) decreases
(D) none

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Q. Speedup tends to saturate and efficiency _____ as a consequence of Amdahl’s law.

(A) increase
(B) constant
(C) decreases
(D) none

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Q. Speedup obtained when the problem size is _______ linearly with the number of processing elements.

(A) increase
(B) constant
(C) decreases
(D) depend on problem size

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Q. The n × n matrix is partitioned among n processors, with each processor storing complete ___ of the matrix.

(A) row
(B) column
(C) both
(D) depend on processor

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Q. cost-optimal parallel systems have an efficiency of ___

(A) 1
(B) n
(C) logn
(D) complex

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Q. The n × n matrix is partitioned among n2 processors such that each processor owns a _____ element.

(A) n
(B) 2n
(C) single
(D) double

High Performance Computing MCQs with answers Page - 15

Q. A simple kernel for adding two integers: global void add( int a, int b, int c ) { c = a + b; } where global is a CUDA C keyword which indicates that:

Q. If variable a is host variable and dev_a is a device (GPU) variable, to allocate memory to dev_a select correct statement:

Q. If variable a is host variable and dev_a is a device (GPU) variable, to copy input from variable a to variable dev_a select correct statement:

Q. Triple angle brackets mark in a statement inside main function, what does it indicates?

Q. Scaling Characteristics of Parallel Programs Ts is

Q. Speedup tends to saturate and efficiency _____ as a consequence of Amdahl’s law.

Q. Speedup obtained when the problem size is _______ linearly with the number of processing elements.

Q. The n × n matrix is partitioned among n processors, with each processor storing complete ___ of the matrix.

Q. cost-optimal parallel systems have an efficiency of ___

Q. The n × n matrix is partitioned among n2 processors such that each processor owns a _____ element.

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High Performance Computing MCQs with answers Page - 15

Q. A simple kernel for adding two integers: __global__ void add( int *a, int *b, int *c ) { *c = *a + *b; } where __global__ is a CUDA C keyword which indicates that:

Q. If variable a is host variable and dev_a is a device (GPU) variable, to allocate memory to dev_a select correct statement:

Q. If variable a is host variable and dev_a is a device (GPU) variable, to copy input from variable a to variable dev_a select correct statement:

Q. Triple angle brackets mark in a statement inside main function, what does it indicates?

Q. Scaling Characteristics of Parallel Programs Ts is

Q. Speedup tends to saturate and efficiency _____ as a consequence of Amdahl’s law.

Q. Speedup obtained when the problem size is _______ linearly with the number of processing elements.

Q. The n × n matrix is partitioned among n processors, with each processor storing complete ___ of the matrix.

Q. cost-optimal parallel systems have an efficiency of ___

Q. The n × n matrix is partitioned among n2 processors such that each processor owns a _____ element.

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Q. A simple kernel for adding two integers: global void add( int a, int b, int c ) { c = a + b; } where global is a CUDA C keyword which indicates that: