17 0 obj 13 0 obj stream   Privacy Compilers can have a profound impact on the performance of an application. If the execution, times on the two processors are the same, how much faster is the clock of the, processor running compiler A’s code versus the clock of the processor running, A new compiler is developed that uses only 6.0E8 instructions and has an, average CPI of 1.1. {D�%( �e�p!����M���̬k��K2z���S��ŒI2��K��L�V�����Ț��i�0�Rf�/Z�u�6�y��}a����q �i�Z����?����7 � 4������#X��~譼:{T��ك�_Z���*ʼp)��|��xAa�ɯ�R���UɻJ�,/��%�!y��/� 8Χ@ A���T�z�^��6 4 0 obj Course Hero, Inc. x��ZKo�8��W�R@b�O��(�ڶ{Xh��{Pl9jK�$7���r(Y���n���=I�����ɗ�������$��]�F�3K6�UB4�G���_ѫo�Ƃ����]��n�x��g������Xf��Q��OT�Y�X�֔����/��~��I"ḏ_A�JFc��L��;Ѷ2��E�(Ye��$Q����*6���4���\���ӵ�����g,2�7#�H��Sb̴&� program with 106 instructions divided into classes as follows: 10% class A, 20% class B, 50% class C, and 20% class D, which implementation is faster? compiler A or B on the original processor? CPI/clock rate Total time P1 = (105 + 2 10 5 2 + 5 10 3 + 2 105 3)=(2:5 109) = 10:4 10 4s Total time P2 = (105 52 + 2 105 52 + 5 10 2 + 2 10 2)=(3 109) = 6:66 10 4s class B, 50% class C, and 20% class D, which implementation is faster? Speedup = (10,000,000 x 2.5 x 5x10-9) / (9,500,000 x 3 x 3.33x10-9 ) = .125 / .095 = 1.32 or 32 % faster after changes. What is the speedup of using this new compiler versus using. This problem will explore the impact compilers have on execution time. Time = No. Get step-by-step explanations, verified by experts. CPI = (4x50 + 5x10 + 4x20 + 3x8 + 3x2)/100 = 3.6. �f_�ɪz^\#�����t t_ȋ�����9�K駷n�դ��x��!0XAAKa������U�dX��A�W���{�/g��Sb-���p�����A��pS��+��� �P��B�B * U��$+P�l) 4� p�@ Compilers can have a profound impact on the performance of an application. For a given architecture performance increases come from: increases in clock rate (without adverse CPI affects), improvements in processor organization that lower CPI, compiler enhancements that lower CPI and/or, : expecting improvement in one aspect of a, machine’s performance to affect the total performance, This textbook can be purchased at www.amazon.com. endobj What's the CPU time? 9����E� �����gC7 � Speedup = Old Execution Time = I old x CPI old x Clock cycle old New Execution Time I new x CPI new x Clock Cycle new Speedup = Old Execution Time = I old x CPI … 15 0 obj %��������� endobj Assume that for a program, compiler A results in a dynamic instruction count, of 1.0E9 and has an execution time of 1.1 s, while compiler B results in a. dynamic instruction count of 1.2E9 and an execution time of 1.5 s. Find the average CPI for each program given that the processor has a clock, Assume the compiled programs run on two different processors. Class C : 5 105 instr. 16 0 obj Assume that for a program, compiler A results in a dynamic instruction count of 1.0E9 and has an execution time of 1.1 s, while compiler B results in a dynamic instruction count of 1.2E9 and an execution time of 1.5 s. What's the global CPI? c. Give two options for improving the CPU performance by 25%. [5 pts] 15) Compilers can have a profound impact on the performance of an application on a given processor. endstream << /Filter /FlateDecode /S 69 /Length 96 >> instr. - 5th Edition. Community College of City University • AST 1020, Copyright © 2020. Course Hero is not sponsored or endorsed by any college or university. Find the clock cycles required in both cases. endobj �b�˯�Y�`��_5��Z��ijd_o*����2�0oE��z(Y�lR��n&�������P�n$�u�d:G�j�!�@��7g��D���D)����\���HF�$�2ϢiG��!�K����؞�:T�(��4�x�a&o9�5����|\��F�S�b(ɮF��u6�h#��q~����8t��9�r[��4U����~�1�D�О�#��ܜ��̹�44� O���5fj�)��� � 3�;%���W�-Ww������S�َ瀘��/�/ے�����x�F&�h ����L�آ߭)W�!o�PWz'w�E�5jã�� H�b���ۅ�_,wyM� ���. stream << /Pages 32 0 R /Type /Catalog >> Clock Rate: 2.0GHZ Class A: 20%, CPI 2 Class B: 30%, CPI 1 Class C: 10%, CPI 3 Class D: 20%, CPI 4 Class E: 20%, CPI 5 I solved a.b but not c .. so I need help- for problem c.. and here are the answer for the a and b . x�[��������Հ�խ�H���ݵ ��f� ��B>L�Kn���TUW��#͘��.�]]u��ե���g�O���ݶ�iӗ��O�҇�n]zs���� ����n�"-ۼm�§7/��봖��r�"}x} ���7iv�J����_cB��vu�۴l��|��k�uk��2�|r,J�͛J�H�|$c>^��� What is the global CPI for each implementation? [10 pts] b) What is the global CPI for each implementation? �m�q�7��� �sI�W�u������2G�Chm� %PDF-1.5 Class A : 105 instr. 4�#%9�{*/� �+�\�s+�X��:�$�@s��ylF << /Length 5 0 R /Filter /FlateDecode >> What is the global CPI for each implementation? What is the global CPI for each implementation Find the clock cycles required. endstream a. a) What is the global CPI for each implementation? Computer Organization and Design MIPS Edition: The Hardware/Software Interface x�cbd`�g`b``8 "���lcɸ���� R��^"լA�r7��K������7 �b`�$ �J � %���� x�c```b``ne`f``aad�0��� }����700����U,v��pQ �``�, Ҝ@� �c�g`��[0�9d��i��3̾����� g�� *Wc*NM�B߿04�2�. 1.4.2 [51 <1.4> What is the global CPI for each implementation? b) Find the clock cycles required in both cases. T{�����:��D�_��h�6�yA��į������� _����ҷ\��_���|�^��0�S@�|�Ny6(Mg+���Vf{����e2�nŏo�R����7�~�orD���I%�3��WE^7���Cfo��摌��,��U�����˺�NNV�Z������hc�G)%��+�-V@�̣U�e�v뀖: 7b�m�-*C�� Y�B>�"( �(1V �'�Mgӱ���Z^MW�U�`��FLl��" �YST���"���7\����X%M��UZ��W�)�J3/p�y5���K_�abayyb�"��B�b�Uy�*�:p�1��8eF �]W~�B �mU��,�Uv.w]�b�#'�|A��hҦ.i�����/��������j���Ze�BF^1*#�����n�1���"��}��w䕸���]�%?H���O��=FSFK�3��Gܺ��������?�}�{^��K�[p��! Class D : 2 510 instr. Do the calculation on your own, and check the, Speed up of new compiler compared to A = 1.67, Speed up of new compiler compared to B = 2.27, Performance is specific to a particular program, total execution time is a consistent summary of. a. The instructions can be divided into four classes according to their CPI (class A, B, C, and D).   Terms. For a limited time, find answers and explanations to over 1.2 million textbook exercises for FREE! 14 0 obj Given a . Calculation of CPI (Cycles Per Instruction) For the multi-cycle MIPS Load 5 cycles Store 4 cycles R-type 4 cycles Branch 3 cycles Jump 3 cycles If a program has 50% R-type instructions 10% load instructions 20% store instructions 8% branch instructions 2% jump instructions then what is the CPI? Clockrate CPI ClassA CPI ClassB CPI ClassC CPI Class D 1.5 GHz 2 GHz 1.4.1 [10] <1.4> Given a program with 106 instructions divided into classes as follows: 10% class A, 20% class B, 50% class C and 20% class D, which implemen- tation is faster? What is the global CPI for each implementation Find the clock cycles required from CDA 3103 at University of Central Florida New CPI: 3.0 – Faster CPU implementation: New clock rate = 300 MHz • What is the speedup with the changes? << /Contents 17 0 R /MediaBox [ 0 0 612 792 ] /Parent 32 0 R /Resources 25 0 R /Type /Page >> %PDF-1.3 stream ��i�^T��$�eB#FY�nj8Q&Qo�����Y���WYf�h��Ld��JPS�N�IV�eU#���]p������ rate and CPI of each implementation are given in the following table. << /Linearized 1 /L 103936 /H [ 901 174 ] /O 16 /E 75211 /N 4 /T 103596 >> Class B : 2 X 105 instr. endobj stream 12 0 obj P1 with a clock rate of 2.5 GHz and CPIs of 1, 2, 3, and 3, and P2 with a clock rate of 3 GHz and CPIs of 2, 2, 2, and 2. 3. << /Filter /FlateDecode /Length 2004 >> This preview shows page 25 - 29 out of 29 pages. << /Type /XRef /Length 70 /Filter /FlateDecode /DecodeParms << /Columns 5 /Predictor 12 >> /W [ 1 3 1 ] /Index [ 12 45 ] /Info 10 0 R /Root 14 0 R /Size 57 /Prev 103597 /ID [<7ddedb40e1bd8c94dbf832faf764b4a3>] >> Introducing Textbook Solutions. endobj

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