IPSJ SIG Technical Report Vol.2015-ARC-215 No.7 Vol.2015-OS-133 No /5/26 Just-In-Time PG 1,a) 1, Just-In-Time VM Geyser Dalvik VM Caffei
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1 Just-In-Time PG 1,a) 1, Just-In-Time VM Geyser Dalvik VM CaffeineMark SPECJVM 17% 1. LSI [1][2][3][4][5] (PG) Geyser [6][7] PG ON/OFF OS PG PG [7][8][9][10] Java Just-In-Time (JIT PG [10] JIT a) koshiba@namikilab.tuat.ac.jp JIT PG PG [10] PG JIT PG PG Geyser Dalvik VM PG 2. PG PG 1 PG PG ( 1 ) c 2015 Information Processing Society of Japan 1
2 1 PG BEP PG PG JIT JIT 3. Break Even Point PG PG BEP PG Hu[1] BEP BEP Shrivastava[2] PG PG You[3] PG Park[4] Roy[5] PG PG PG PG PG [7][8][9][10] [10] JIT (VM) JIT (JIT ) PG VM JIT JIT PG JIT JIT JIT PG VM VM 2 2 [10] VM JIT JIT 2 PG Geyser Dalvik VM PG JIT JIT JIT c 2015 Information Processing Society of Japan 2
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3 4 JIT 2 PG VM 3 JIT [10] JIT PG JIT JIT JIT BEP PG JIT PG 3 JIT PG JIT 4.2 JIT JIT 4 JIT JIT 1:1 2 JIT 1 4 JIT JIT JIT PG len PG c 2015 Information Processing Society of Japan 3
4 BasicBlock#0 _0 branch _1 BasicBlock#1 BasicBlock#2 branch BasicBlock#3 5 6 head PG JIT tail Geyser head tail BasicBlock #0 BasicBlock #1 BasicBlock #0 tail 5 tail0 BasicBlock #1 head 5 head1 JIT BEP 4.3 PG PG [11] JIT Yeh[12][13] 6 PG PG PG PG BB 0, BB 1,... BB n c 2015 Information Processing Society of Japan 4
5 JIT IC len (1) IC len = IC BBk n IC BBk (1) k=0 (IC BBk ) IC BBk = BB tail k (k = 0) (2a) BB head k (k = n) (2b) BB len k (0 < k < n) (2c) 7 (1) JIT 8 9 JIT head tail JIT IC cb PG PG PG PG PG PG IC path len p path IC len IC len = path p path IC path len (3) IC len PG 10 BB 0 BB 1 BB 3 BB 0 BB 1 BB 4 BB 0 BB 2 3 p 013 p 014 p 02 BB 0 BB avg next 1 IC len = p 013 IC 013 len + p 014 IC 014 len + p 02 IC 02 len (4) PG c 2015 Information Processing Society of Japan 5
6 PG Dalvik VM Android Android QEMU Google Android Emulator( ) Android 1 CPU PG Android Android Emulator MIPS32 Rev2 Geyser MIPSAndroid (JB) QEMU P P = P sleep T sleep + P active T active T total (5) T total T sleep T active P active P sleep P sleep (6) i P sleep = (P sleep i T sleepi ) i T (6) sleep j P sleepi i 1 (P sleepi ) (P active ) Synopsys Power Compiler Geyser [14][15] Caffeine- Mark v3.0 Logic, Loop, Method, Sieve SPECJVM98 compress 25 C 65 C 100 C 125 C PG PG PG PG PG % 100 C Sieve 17% [10] Logic Loop 2 Method Shift 10% 1% Sieve compress PG Div PG PG 65 C Sieve % C Sieve 11 Sieve PG JIT PG JIT ( c 2015 Information Processing Society of Japan 6
7 11 Sieve 2 JIT Logic 35.0 Loop 56.9 Method 51.3 Sieve loop ) 2 Logic, Loop, Method, Sieve JIT Dalvik VM JIT JIT JIT BEP JIT Oracle JavaVM HotSpotVM JIT JIT JIT JIT JIT PG PG PG PG PG 13 Sieve Caffeine Mark SPECJVM Logic Loop Method Shieve compress Loop Sieve PG 2.2% 3.5% Shift 9.8% 20.0% Sieve Div 100 C Sieve c 2015 Information Processing Society of Japan 7
8 50.5% 29% PG Div BEP PG PG 6. JIT PG PG Dalvik VM QEMU JIT 4% 17% [10] JIT PG VM PG JSPS S [1] Z. Hu, A. Buyuktosunoglu, V. Srinivasan, V. Zyuban, H. Jacobson, and P. Bose: Microarchitectural techniques for power gating of execution units, In Proc. of the 2004 International Symposium on Low Power Electronics and design, pp. 32?37, [2] A. Shrivastava, D. Kannan, S. Bhardwaj, and S. Vrudhula: Reducing functional unit power consumption and its variation using leakage sensors, IEEE Transactions on VLSI Systems, Vol. 18, No. 6, pp. 988?997, [3] Yi-Ping You, C. Lee, and J. K. Lee: Compilers for leakage power reduction, ACM Transactions on Design Automation of Electronic Systems, Vol. 11, pp. 147?164, [4] Hanmin Park, Jong Kyung Paek, Jinho Lee, and Kiyoung Choi: Leakage power reduction of functional units in processors having zero-overhead loop counter, SoC Design Conference (ISOCC) 2009 International, pp , Nov [5] S. Roy, N. Ranganathan, and S. Katkoori: A Framework for Power-Gating Functional Units in Embedded Microprocessors, IEEE Transaction of VLSI Systems vol.17, pp , Nov [6] N. Seki, L. Zhao, J. Kei, D. Ikebuchi, Y. Kojima, Y. Hasegawa, et al.: A Fine Grain Dynamic Sleep Control Scheme in MIPS R3000, The 26th IEEE International Conference on Computer Design(ICCD2008), pp , Oct [7] M. Kondo, H. Kobyashi, R. Sakamoto, M. Wada, J. Tsukamoto, M. Namiki, et al.: Design and Evaluation of Fine-Grained Power-Gating for Embedded Microprocessors, DATE 2014, pp.1-6, Mar [8],,,,, : Linux, (SACSIS) 2012, [9],,, : Linux, Vol.2014-OS-129, No.14, pp.1-9, [10] Motoki Wada, Mikiko Sato, Mitaro Namiki: A Fine Grained Power Management supported by Just-In-Time Compiler, IEEE Symposium on Low-Power and High- Speed Chips(CoolChips) XVII, Session XIII, No.3, Apr. 16, [11] Brian Deitrich, Ben-Chung Cheng, and Wen mei Hwu: Improving static branch prediction in a compiler, In Proc. of the 1998 International Conference on Parallel Architectures and Compilation Techniques, pp , [12] Tse-Yu Yeh, et al.: Two-Level Adaptive Training Branch Prediction, MICRO 24 Proceedings of the 24th annual international symbosium on Microarchtecture, pp.51-61, [13] Tse-Yu Yeh, et al.: Alternative Implementations of Two-Level Adaptive Branch Prediction, ISCA 92 Proceedings of the 19th annual international symposium on Computer architecture, pp , [14],,,,,, :, vol.107, no.414, VLD , pp , Jan [15] : MIPS R3000 vol.107, no.414, VLD , pp , Jan c 2015 Information Processing Society of Japan 8
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