Deck 8: Parallel Processing and GPU Architecture

Question 1

The style of parallelism supported on GPUs is best described as

A)misd - multiple instruction single data
B)simt - single instruction multiple thread
C)sisd - single instruction single data
D)mimd

Answer 1

simt - single instruction multiple thread

Question 2

Functions annotated with the __global__ qualifier may be executed on the host or the device

Answer 2

True

Question 3

Which of the following correctly describes a GPU kernel

A)a kernel may contain a mix of host and gpu code
B)all thread blocks involved in the same computation use the same kernel
C)a kernel is part of the gpu\s internal micro-operating system, allowing it to act as in independent host
D)kernel may contain only host code

Answer 3

all thread blocks involved in the same computation use the same kernel

Question 4

a code known as grid which runs on GPU consisting of a set of

A)32 thread
B)unit block
C)32 block
D)thread block

Question 5

which of the following is not an parallel algorithm model

A)data parallel model
B)task graph model
C)task model
D)work pool model

Question 6

Having load before the store in a running program order, then interchanging this order, results in a

A)waw hazards
B)destination registers
C)war hazards
D)registers

Question 7

model based on the passing of stream of data through process arranged in a succession is called as

A)producer consumer model
B)hybrid model
C)task graph model
D)work pool model

Question 8

When instruction i and instruction j are tends to write the same register or the memory location, it is called

A)input dependence
B)output dependence
C)ideal pipeline
D)digital call

Question 9

Multithreading allowing multiple-threads for sharing the functional units of a

A)multiple processor
B)single processor
C)dual core
D)corei5

Question 10

Allowing multiple instructions for issuing in a clock cycle, is the goal of

A)single-issue processors
B)dual-issue processors
C)multiple-issue processors
D)no-issue processors

Question 11

OpenGL stands for:

A)open general liability
B)open graphics library
C)open guide line
D)open graphics layer

Question 12

which of the following is not an advantage of OpenGL

A)there is more detailed documentation for opengl while other api\s don\t have such detailed documentation.
B)opengl is portable.
C)opengl is more functional than any other api.
D)it is not a cross-platform api,

Question 13

work pool model uses ---------------- approach for task assignment

A)static
B)dynamic
C)centralized
D)decentralized

Question 14

which of the following is false regarding data parallel model

A)all task perform same computations
B)degree of parallelism increase with size of problem
C)matrix multiplication is example of data parallel computations
D)dynamic mapping is done

Question 15

which of the following are methods for containing interaction overheads

A)maximizing data locality
B)minimize volumn of data exchange
C)min frequency of interactions
D)all the above

Question 16

which of the following are classes of dynamic mapping centralized method

A)self scheduling
B)chunk scheduling
C)both a and b
D)none of the above

Question 17

which of the following is not scheme for static mapping

A)block distribution
B)block cyclic distributions
C)cyclic distributions
D)self scheduling

Question 18

A pipeline is like ....................

A)an automobile assembly line
B)house pipeline
C)both a and b
D)a gas line

Question 19

Data hazards occur when .....................

A)greater performance loss
B)pipeline changes the order of read/write access to operands
C)some functional unit is not fully pipelined
D)machine size is limited

Question 20

Systems that do not have parallel processing capabilities are

A)sisd
B)simd
C)mimd
D)all of the above

Question 21

How does the number of transistors per chip increase according to Moore ´s law?

A)quadratically
B)linearly
C)cubicly
D)exponentially

Question 22

Parallel processing may occur

A)in the instruction stream
B)b. in the data stream
C)both[a] and [b]
D)none of the above

Question 23

Execution of several activities at the same time.

A)processing
B)parallel processing
C)serial processing
D)multitasking

Question 24

Cache memory works on the principle of

A)locality of data
B)locality of memory
C)locality of reference
D)locality of reference & memory

Question 25

SIMD represents an organization that ______________.

A)refers to a computer system capable of processing several programs at the same time.
B) represents organization of single computer containing a control unit, processor unit and a memory unit.
C) includes many processing units under the supervision of a common control unit
D) none of the above.