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Çѱ¹¼öÀÚ¿øÇÐȸ / v.43, no.8, 2010³â, pp.747-755
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ºÐÆ÷Çü °¿ìÀ¯Ãâ¸ðÇü º´·ÄÈ Ã³¸®±â¹ý Àû¿ë
( Application of MPI Technique for Distributed Rainfall-Runoff Model ) |
| Á¤¼º¿µ;¹ÚÁøÇõ;Ç㿵ÅÃ;Á¤°ü¼ö; K-water ³²°´ï°ü¸®´Ü;K-water ¼öÀÚ¿ø¿¬±¸¼Ò;K-water ¹°°ü¸®¼¾ÅÍ;Ãæ³²´ëÇб³ Åä¸ñ°øÇаú;
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| Áö±Ý±îÁö ºÐÆ÷Çü ¸ðÇüÀº °³³äÀû ¸ðÇü¿¡ ºñÇØ ¿îµ¿¿ªÇÐÀûÀÎ À̷п¡ ±Ù°ÅÇÏ¿© ¹°ÀÇ È帧À» ¼öÄ¡ÇØ¼®À¸·Î ÃßÀûÇØ ³ª°¡±â ¶§¹®¿¡ ¸¹Àº ÄÄÇ»ÅÍ ¸Þ¸ð¸®¿ë·®ÀÌ ¿ä±¸µÇ°í °è»ê¼öÇà½Ã°£ÀÌ »ó´ëÀûÀ¸·Î ¿À·¡ °É¸®´Â ´ÜÁ¡ÀÌ ÀÖ¾ú´Ù. ±×·¡¼ ºÐÆ÷Çü¸ðÇüÀÇ Àû¿ëÀº ÁÖ·Î ¼ÒÀ¯¿ª¿¡ ±¹ÇѵǾî Àû¿ëµÇ¾î¿ÔÀ¸¸ç, ´ëÀ¯¿ª¿¡ Àû¿ëÇϱâ À§Çؼ´Â °ÝÀÚÀÇ ÇØ»óµµ¸¦ ³·Ã߰ųª ¼ÒÀ¯¿ª Àû¿ë°ú µ¿ÀÏÇÑ ÇØ»óµµ¿¡¼´Â °è»ê ½Ã°£ÀÌ ¸¹ÀÌ ¼Ò¿äµÇ¾î ½Ç¹«Àû¿ëÀ» ¾î·Æ°Ô ÇÏ´Â ¿äÀÎÀÌ µÇ¾î¿Ô´Ù. ÀÌ¿¡ ´ëÇØ º» ¿¬±¸¿¡¼´Â MPI (Message Passing Interface)±â¹ýÀ» Àû¿ëÇÏ¿© ¹°¸®ÀûÀÌ°í º¹ÀâÇÑ ¼öÄ¡°è»êÀ» ÇÏ´Â ºÐÆ÷Çü¸ðÇüÀÇ ´ÜÁ¡ Áß ÇϳªÀÎ ´ëÀ¯¿ª Àû¿ë½ÃÀÇ °è»ê¼Ò¿ä ¹®Á¦¸¦ ÇØ°áÇϰíÀÚ ÇÏ¿´´Ù. ¶ÇÇÑ º´·ÄÈ ±â¹ýÀÇ Àû¿ëÈ¿°ú¸¦ ºÐ¼®Çϱâ À§ÇÏ¿© ´ÜÀÏ ¿µ¿ª¿¡¼ °è»êµÈ °á°ú¿Í ´Ù¼öÀÇ ¼Ò¿µ¿ªÀ¸·Î ºÐÇÒÇÏ¿© ¼öÇàµÇ¾îÁø °è»ê °á°ú¸¦ ºñ±³ÇÏ¿´´Ù. ¿ë´ã´ï À¯¿ª¿¡ 2006³â ÅÂdz '¿¡À§´Ï¾Æ' »ç»óÀ» ´ë»óÀ¸·Î º´·ÄÈ °è»êÀ» ¼öÇàÇÑ °á°ú ´ÜÀÏ ÇÁ·Î¼¼¼¿¡¼ ºÐÆ÷Çü¸ðÇüÀ» ¼öÇàÇÏ´Â °Íº¸´Ù º´·ÄÄڵ忡¼ ¼öÇàÇÑ °æ¿ì°¡ À¯Ãâ°è»ê °ªÀÇ º¯µ¿ ¾øÀÌ ÃÖ°í 10¹è¿¡ ÇØ´çµÇ´Â °è»ê½Ã°£ÀÌ ´ÜÃàµÇ¾ú´Ù. |
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| Distributed Models have relative weak points due to the amount of computer memory and calculation time required for calculating water flow using a numerical analysis based on kinematic wave theory when compared to the conceptual models used so far. Typically, the distributed models have been mainly applied to small basins. It was necessary to decrease the resolution of the grid to make it applicable for large scale watersheds, and because it would take up too much time to calculate using a higher resolution. That has been one of the more difficult factors in applying the model for actual work. In this paper, MPI (Message Passing Interface) technique was applied to solve the problem of calculation time as it is one of the demerits of the distributed model for performing physical and complicated numerical calculations for large scale watersheds. The comparison studies were performed a single domain and a divided small domain in Yongdam Dam watershed in case of typoon 'Ewiniar' at 2006. They were compared to analyze the application effects of parallelization technique. As a result, a maximum of 10 times the amount of calculation time was saved but keeping the level of quality for discharge by using parallelization code rather than a single processor. |
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| Ű¿öµå |
| º´·ÄÈ;ºÐÆ÷Çü¸ðÇü;È«¼öÀ¯Ãâ;Áö¸®Á¤º¸½Ã½ºÅÛ;parallelization;MPI;distributed model;flood discharge;GIS; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.43, no.8, 2010³â, pp.747-755
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201025240675835)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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