本論文係有關以遠端程序呼叫為基礎的分散式處理系統之Linux端相關軟體設計，研究工作主要包含四大部份：
第一部份為Linux端下載程式之設計，將ELF檔下載至NIOS II開發板上準備執行。
第二部份為遠端程序呼叫相關通訊協定程式之設計；經由訂立了一套傳輸機制來確保系統在遠端呼叫過程中訊息傳遞的正確性，讓Linux端透過乙太網路連接NIOS II端執行程序並將結果回傳。
第三部份為Linux端遠端程序呼叫相關執行程式自動產生器之設計，讓使用者可直接使用自動產生之相關介面程式，簡化遠端程序呼叫之程式設計。
第四部份為分散式處理系統Linux端相關測試程式之設計與系統效能分析，包含內部與公開使用之乙太區域網路上之系統測試，比較測試結果並找出影響系統效能的可能原因。
整體而言，本論文係以實現一個分散式處理系統的設計環境為目標，並藉由遠端程序呼叫機制之建立與POSIX執行緒標準，發揮NIOS II開發板最大效能，達成增進系統整體執行效益的目的。

This thesis is related to the Linux-based software design of a remote-procedure-call-based (RPC-based) distributed processing system. The major research work includes four parts.

The first part is to design a program which can download an ELF (Executable and Linkable Files) file from the Linux-based personal computer to the NIOSII-based development board.

The second part is to design both the communication protocol and program for RPC. Here the accuracy of message passing in the process of RPC can be ensured by setting up a transmission mechanism, so the Linux end can be connected to the NIOSII end through Ethernet to run a procedure and get the results at the end of execution.

The third part is about designing the automatic generator for RPC run-time programs used in the Linux end. Therefore, interface programs can be generated automatically and users can use them directly. In this way the RPC-based program design can be simplified.

The fourth part is about the design of the Linux-based testing programs and performance analysis for the distributed processing system. The testing environments include both privately and publicly used LANs. Testing results are compared to find the reason that may affect the system performance.

On the whole, the goal of this thesis is to realize a design environment for distributed processing systems. Meanwhile, through setting up the RPC mechanism and following the standard of POSIX threads, the efficiency of the NIOSII-based development board can be maximized and the purpose of enhancing the performance of the whole system can be achieved.

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