You are performing two sums: the first is a sum of two scalar variables and the second is a matrix sum of a pair of two- dimensional arrays-size 1000 by 1000.What speedup is achieved when the calculations are performed on size 1000 processors?A．50B．100C．9

题目

You are performing two sums: the first is a sum of two scalar variables and the second is a matrix sum of a pair of two- dimensional arrays-size 1000 by 1000.What speedup is achieved when the calculations are performed on size 1000 processors?

A．50

B．100

C．999

D．none of the above

相似考题

1.You have only 1000 words in which to ______ his speech.A：amount toB：sum upC：lead toD：take up

2.You want to perform an RMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation?() (Choose two).A. The backup as copy can only be taken to diskB. The backup as copy can only be taken to tapeC. Backup can be performed only when the instance is shutdownD. Backup will constitute all used and unused blocks in the database

3.You are the administrator of a SQL Server 2000 computer. You have two new hard disks on which you will create a database named inventory. You want to insert, update, and delete data as quickly as possible.Which two actions should you take? (Each correct answer presents parts of the solution. Choose two)A. Configure the hard disks as two mirrored NTFS volumes.B. Configure the hard disks as one mirrored NTFS volumes.C. Configure the hard disks as two independent NTFS volumes.D. Configure the hard disks as one extended NTFS volume.E. Place inventory_data.mdf on the first volume and inventory_log.ldf on the second volume.F. Place inventory_data.mdf on the first volume and inventory_data2.ndf and inventory_log.ldf on the second volume.G. Place inventory_data.mdf and inventory_log.ldf on the same volume.

4.You want to perform an RMAN backup of database as a copy. Which two factors will you consider while performing the backup operation?()A. The backup as copy can only be taken to diskB. The backup as copy can only be taken to tapeC. Backup can be performed only when the instance is shutdownD. Backup will constitute all used and unused blocks in the database

更多“You are performing two sums: the first is a sum of two scalar variables and the second is a matrix sum of a pair of two- dimensional arrays-size 1000 by 1000.What speedup is achieved when the calculations are performed on size 1000 processors?A．50B．100C．9”相关问题

  • 第1题：

    Embedded systems always require the user to manipulate bits in

    registers or variables. Given an integer variable a, write two code fragments.

    The first should set bit 5 of a. The second shnuld clear bit 5 of a. In both

    cases, the remaining bits should be unmodified.


    正确答案：
     

  • 第2题：

    12． About_______ of the workers in the factory were born in the __________．

    A． two- thirds;1970

    B． two- thirds ; 1970s

    C． two-third ; 1970

    D． two-third ; 1970s


    正确答案：B
    12．B【解析】句意：工厂里大约2/3的工人出生在20世纪70年代。分数的表达为分子用基数词，分母用序数词，如果分子大于1，则分母要用复数，排除C、D，年代的表达要在年份后加s．故选B。

  • 第3题：

    There are two syllables in the word "motto". /ēü/ occurs in both syllables, but the first one is longer than the second because __________.

    A．it is stressed
    B．it comes before a consonant
    C．it is in the first syllable
    D．it comes between two consonants

    答案：A
    解析：
    考查语音教学。motto的发音中第一个／au／K于第二个／au／，是因为重音在第一个／au／上。

  • 第4题：

    He（）a sum of money every month to help the two orphans

    Asets aside

    Bsets up  

    Csets along 

    Dsets in


    A
    略

  • 第5题：

    You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds. What could be the cause of this problem?（）

    • A、OSPF authentication errors between some of the routers
    • B、Two routers have the same OSPF router ID
    • C、Issues with mistuned OSPF timers
    • D、OSPF LSA pacing issues between some of the routers
    • E、OSPF neighbor adjacency problems between some of the routers

    正确答案:B

  • 第6题：

    You are installing Windows 2000 Professional on 100 MPS compliant computers. You have created an image of this computer and copied the image to two test computers， which have two processors installed on them. When you run the test computers， you find out that the second processor on both the computers is not being used. What should you do to enable the second processor？（）

    • A、On your original machine use Device Manager/Computer/Properties/Drivers/Update Driver to  install the correct multiprocessor HAL. 
    • B、On the original computer, through the Add New Hardware, select the processor from the  device list and install the required processor. 
    • C、Download the patch from the motherboard manufacturer to allow the configuration of dual  processors. 
    • D、Reinstall Windows 2000 Professional on both the test computers.

    正确答案:A

  • 第7题：

    An x445 with two 3.0GHz DP processors and 2GB of RAM is running a processor-intensive floating-point geological application that calculates pressures in the earth’s crust.  It takes a long time for each calculation， and the director of computing wants the calculations to take less time.  Memory addressed by the application may also be a bottle neck.  Which of the following will most improve the ability to run the calculations in less time？（）

    • A、Replace the two 3.0 GHz DP processors with four 3.0GHz MP processors with a 4MB L3 cache and 4GB of RAM
    • B、Replace the x445 with an x366 with four 3.66 EM64T processors with a 1MB L2 cache and 4GB of RAM
    • C、Replace the two 3.0GHz DP processors with two 3.0GHz MP processors with a 4MB L3 cache and 2GB RAM
    • D、Replace the two 3.0GHz DP processors with four 3.0 GHz DP processors with a 512KB L2 cache and 4GB RAM

    正确答案:B

  • 第8题：

    You want to perform an RMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation?（） (Choose two).

    • A、The backup as copy can only be taken to disk
    • B、The backup as copy can only be taken to tape
    • C、Backup can be performed only when the instance is shutdown
    • D、Backup will constitute all used and unused blocks in the database

    正确答案:A,D

  • 第9题：

    多选题
    You want to perform an RMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation?（） (Choose two).
    A

    The backup as copy can only be taken to disk

    B

    The backup as copy can only be taken to tape

    C

    Backup can be performed only when the instance is shutdown

    D

    Backup will constitute all used and unused blocks in the database


    正确答案： C,A
    解析： 暂无解析

  • 第10题：

    问答题
    On the left are two shapes with an arrow between them. Decided how the second is related to the first. After this there is a third shape, an arrow and four shapes. Find which of the four shapes goes with the third one to make a pair like the two on the left.

    正确答案： C
    解析： (从左边的例子来看，第二个的边框比第一个黑重，第一竖栏的字母B由上转到下，第二竖栏的方框由上转到下，第三竖栏不变。以此类推，选项C为正确答案。)

  • 第11题：

    多选题
    You want to perform an RMAN backup of database as a copy. Which two factors will you consider while performing the backup operation？（）
    A

    The backup as copy can only be taken to disk

    B

    The backup as copy can only be taken to tape

    C

    Backup can be performed only when the instance is shutdown

    D

    Backup will constitute all used and unused blocks in the database


    正确答案： B,D
    解析： 暂无解析

  • 第12题：

    单选题
    The average (arithmetic mean) of five numbers is 10. The sum of three of the numbers is 30. What is the sum of the other two numbers?
    A

    5

    B

    10

    C

    20

    D

    30

    E

    40


    正确答案： C
    解析：
    The arithmetic mean of the five numbers is 10. That means the sum of the numbers is 50. The sum of three numbers is 30. so the sum of the remaining two numbers is 50-30 = 20.

  • 第13题：

    You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds.What could be the cause of this problem?（）

    A. OSPF authentication errors between some of the routers

    B. Two routers have the same OSPF router ID

    C. Issues with mistuned OSPF timers

    D. OSPF LSA pacing issues between some of the routers

    E. OSPF neighbor adjacency problems between some of the routers


    参考答案：B

  • 第14题：

    the（）is a graph that shows the relationship between two variables.

    A.histograms
    B.flowcharts
    C.matrix diagrams
    D.Scatter diagrams

    答案：D
    解析：
    翻译：（）是显示两个变量之间关系的图。
    A.直方图
    B.流程图
    C.矩阵图
    D.散点图
    散点图是显示两个变量之间关系的图。

  • 第15题：

    Two hundred dollars__a large sum of money to the old man.

    A.is
    B.is to be
    C.are
    D.are to be

    答案：A
    解析：
    表示时间、距离、重量、价值等的复数名词做主语时，如果当成整体看待，谓语动词用单数形式。

  • 第16题：

    He（）a sum of money every month to help the two orphans

    • A、sets aside
    • B、sets up  
    • C、sets along 
    • D、sets in

    正确答案:A

  • 第17题：

    In which two situations should you run the command sync group?（） (Choose two.)

    • A、when you enable Unified Failover
    • B、when you create an ActiveN group
    • C、when you synchronize the sticky table
    • D、when you require synchronization of the 3G Cache objects

    正确答案:A,B

  • 第18题：

    A company installed a new server to manage its electronic image storage.  They have two distinct image sizes： 2KB and 16KB.  Two distinct arrays are created on a ServeRAID adapter.  The first array will store all of the 2KB images， and the second array will store all the 16KB images.  The RAID stripe size was left at the default size of 8KB.  After installation， a performance problem is identified. According to performance monitoring， 80% of the images are 16KB.  Which of the following will best optimize performance？（）

    • A、Change the stripe size on the RAID controller
    • B、Change the stripe size to 1024K on the RAID controller
    • C、Change the stripe size on the RAID controller for the first array
    • D、Change the stripe size on the RAID controller for the second array

    正确答案:A

  • 第19题：

    You want to perform an RMAN backup of database as a copy. Which two factors will you consider while performing the backup operation？（）

    • A、 The backup as copy can only be taken to disk
    • B、 The backup as copy can only be taken to tape
    • C、 Backup can be performed only when the instance is shutdown
    • D、 Backup will constitute all used and unused blocks in the database

    正确答案:A,D

  • 第20题：

    You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. At present about 90 GB of data is stored in DB1. You made some rough calculations that every day about 1 GB of data is modified or inserted. You set the recovery model of DB1 to Simple. According to the company requirements, during business hours, data loss of more than 120 minutes worth of transactions is unacceptable. You have to choose a backup strategy which must comply with the following two requirements: Using as little disk space as possible Complying with the company requirements. So what action should you perform to achieve this goal?（）  

    • A、A full database backup should be performed once daily. During business hour, a transaction log backup should be performed every two hours. 
    • B、A full database backup should be performed once daily 
    • C、A full database backup should be performed once daily. During business hours, a differential backup should be performed every two hours 
    • D、Perform a full database backup should be performed once every week. A differential backup should be performed once daily. During business hours a transaction log backup should be performed every two hours.

    正确答案:C

  • 第21题：

    单选题
    View the Exhibits. You performed operations on the DEPT4 table as shown in the Exhibit. When you perform the FlashbackVersions Query， you find that the first two updates are not listed. What could be the reason？（）
    A

    The row movement is not enabled on the table.

    B

    The first two updates were not explicitly committed.

    C

    The Flashback Versions Query lists only the most recent update.

    D

    The Flashback Versions Query stops producing rows after it encounters a time in the past when the  table structure was changed.


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    By saying “You have left the door wide open”, a speaker might be performing the three acts: locutionary, illocutionary and perlocutionary _____.
    A

    at the same time

    B

    one after another

    C

    two first and then the other

    D

    one first and then the other two


    正确答案： B
    解析：
    言语行为理论中的发话行为先发生，然后行事行为和取效行为才发生。行事行为和取效行为属于话后行为。

  • 第23题：

    问答题
    What is the value of the greater of two numbers if one of the numbers is three times the smaller number?　　(1) one of the numbers is 12.　　(2) The sum of the two numbers is 16.

    正确答案： B
    解析：
    通过计算可知，条件1无法确定两个数的值；由条件2可知，所求的数为12，故本题选B项。

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