Transactional　Memory(TM)　is　being　studied　widely　by　researchers,　which　is　viewed　as　a　new　parallel　programming　model　for　synchronizing　concurrent　accesses　to　shared　data　object　in　multi-core　or　many-core　systems.　Research　result　shows　that　TM　has　a　good　performance　over　Lock　using　micro-benchmarks.　The　performance　of　real　applications　based　on　TM　is　still　not　clear.　In　this　paper,　we　describe　how　to　build　Simulation　System　of　Earthquake　Precursory　Observatory　Equipment　(SSEPOE)　using　Dynamic　Software　Transactional　Memory　(DSTM)　and　compare　the　scalability　of　it　to　that　of　lock-based　one.　Experimental　result　shows　that　the　performance　of　SSEPOE　based　on　STM　have　no　advantages　than　lock-based　one　and　it　has　a　little　convenience　than　lock　in　programming　SSEPOE,　this　is　because　SSEPOE　is　rather　simple　and　the　experimentation　computer　only　has　two　cores.　If　the　computer　has　more　cores　and　the　real　application　is　more　complex,　the　version　based　on　STM　will　outperform　the　lockbased　one.　Another　hand,　because　DSTM2　did　not　support　long　transactions,　SSEPOE　Server　did　not　realize　all　synchronization　of　threads　using　transactions.　We　only　used　transactions　in　the　execution　process　of　command　instead　of　locks.　We　also　gave　insights　into　development　techniques　to　encounter　in　developing　SSEPOE　Server　and　discussed　the　shortcomings　of　DSTM　APIs.　©　2010　IEEE.