HNalbandyan-DSM.DVI Mathematical Problems of Computer Science 23, 2004, 119{126. On System with Distr ibuted Shar ed M emor y H o vh a n n e s Z. N a lb a n d ya n State Engineering University of Armenia e-mail hovign@web.am Abstract Distributed shared memory systems combine the scalability of loosely coupled mul- tiple computer systems with the ease of usability of tightly coupled multiprocessors, providing with transparent replication and caching of data. This paper introduces distributed system for parallel computing { DSPC, that provides distributed shared memory on top of network of workstations. Programming model, memory organiza- tion, cache-coherence protocol and adaptive techniques are discussed in the paper. An evaluation with some well-known DSM benchmarks was done to present the overall performance of the DSPC system. Refer ences [1 ] D . B a ile y, L . D a g u m , E . B a r s z c z a n d H . S im o n . N A S p a r a lle l b e n c h m a r k r e s u lt s . In Supercomputing, p a g e s 3 8 6 { 3 9 3 , 1 9 9 2 . [2 ] A . Gh a z a r ya n . On s ys t e m fo r d is t r ib u t e d p a r a lle l c o m p u t a t io n s - d s p c . In P roc. of the Int'l Conference on Computer Science and Information Technologies (CSIT 2001), A u g u s t 2 0 0 1 . [3 ] L . Ift o d e , J. P . S in g h , a n d K . L i. S c o p e c o n s is t e n c y: A b r id g e b e t we e n r e le a s e c o n s is t e n c y a n d e n t r y c o n s is t e n c y. In P roc. of the 8th ACM Annual Symp. on P arallel Algorithms and Architectures (SP AA'96), p a g e s 2 7 7 { 2 8 7 , Ju n e 1 9 9 6 . [4 ] H . L u , S . D wa r ka d a s , A . Co x, a n d W . Zwa e n e p o e l. Qu a n t ifyin g t h e p e r fo r m a n c e d i®e r - e n c e s b e t we e n p vm a n d t r e a d m a r ks . J ournal of P arallel and D istributed Computing, 4 3 , N o . 2 :6 5 { 7 8 , Ju n e 1 9 9 7 . [5 ] H . N a lb a n d ya n . On p a r a lle l p r o c e s s in g wit h d is t r ib u t e d s h a r e d m e m o r y. In P roc. of the Int'l Conference on Computer Science and Information Technologies (CSIT 2003), p a g e s 3 1 7 { 3 2 0 , S e p t e m b e r 2 0 0 3 . [6 ] S . W o o , M. Oh a r a , E . To r r ie , J.P . S in g h , a n d A . Gu p t a . Th e s p la s h -2 p r o g r a m s : Ch a r a c h - t e r iz a t io n a n d m e t h o d o lo g ic a l c o n s id e r a t io n s . In P roc. of the 22th Annual Int'l Sump. on Computer Architecture (ISCA'95), p a g e s 2 4 { 3 6 , Ju n e 1 9 9 5 . 1 1 9 1 2 0 On System with Distributed Shared Memory ´³ßËí³Í ÁݹѳÝáõñ ÑÇßáÕáÃÛáõÝáí ѳٳϳñ·Ç Ù³ëÇÝ Ð. ¼. ܳɵ³Ý¹Û³Ý ²Ù÷á÷áõÙ ²ß˳ï³ÝùáõÙ ¹Çï³ñÏíáõÙ ¿ ½áõ·³Ñ»é ѳßí³ñÏÝ»ñÇ Ñ³Ù³ñ ëï»ÕÍí³Í Ýáñ µ³ßËí³Í ÁݹѳÝáõñ ÑÇßáÕáõÃÛáõÝáí ѳٳϳñ·Ç Ýϳñ³·ñáõÃÛáõÝÁ: øÝݳñÏí³Í »Ý ѳٳϳñ·Ç ϳéáõóí³ÍùÁ, ÑÇßáÕáõÃÛ³Ý Ùá¹»ÉÁ, ïíÛ³ÉÝ»ñÇ Ñ³Ù³å³ñ÷³ÏáõÃÛ³Ý ³ñӳݳ·ñáõÃÛáõÝÁ: Æñ³·áñÍí»É »Ý ÙÇ ß³ñù ËݹÇñÝ»ñ ѳٳϳñ·Ç ³ñï³¹ñáճϳ- ÝáõÃÛáõÝÁ ·Ý³Ñ³ï»Éáõ Ýå³ï³Ïáí: êï³óí³Í ³ñ¹ÛáõÝùÝ»ñÁ íϳÛáõÙ »Ý ѳٳϳñ·Ç µ³ñÓñ ³ñ³·³·áñÍáõÃÛ³Ý Ù³ëÇÝ: