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All Journal Jurnal INKOM JOIN (Jurnal Online Informatika)
Wirahman, Taufiq
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Computer Science & IT

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Kriptografi dan Skema Keamanan pada Jaringan Sensor Nirkawat Wirahman, Taufiq
INKOM Journal Vol 6, No 2 (2012)
Publisher : Pusat Penelitian Informatika - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (313.952 KB) | DOI: 10.14203/j.inkom.190

Abstract

This paper attempts to explore the security issues in sensor network that include constraints in sensor networks security, the requirements of secure sensor networks, attack classification and its counter measures and security mechanisms at wirelesssensor network (WSN) such as cryptography and key management. Popularity of wireless sensor network is increasing because of its potential to provide low-cost solution for a variety of real-world problem. As a special form of ad-hoc networks, sensor networks has many limitations that lead to vulnerabilities in security issues. Currently, there are many researches in the field of sensor network security. Our analysis shows that symmetric key cryptography systems are more favorable to provide WSN security services because of its computation and energy cost. Moreover, distributed combine with pre-distributed key management is important to overcome security threats and centralize threats detection is more favorable to reduce energy and computation cost of sensor nodes.
Rekayasa Keamanan pada Kompilator Online untuk Pemrograman Paralel Arisal, Andria; Wirahman, Taufiq; Nuryani, Nuryani; Suwarningsih, Wiwin
INKOM Journal Vol 3, No 1-2 (2009)
Publisher : Pusat Penelitian Informatika - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (61.27 KB) | DOI: 10.14203/j.inkom.42

Abstract

Kami mengembangkan kompilator online untuk pemrogram parallel sebagai suatu kakas pembelajaran untuk mempraktekkan dan memahami paradigm pemrograman paralel. Kakas ini memiliki antarmuka langsung dengan pengguna umum melalui Internet, sehingga selain mudah digunakan, akan sangat rentan terhadap berbagai macam serangan online. Kami menyadari bahwa factor keamanan adalah salah satu aspek penting dari pengembangan perangkat lunak yang harus diterapkan pada pengembangan kompilator online tersebut. Dengan menganalisis kelamahan dan serangan yang mungkin terjadi, kompilator online ini dibangun dengan menggunakan dua tahapan pengamanan. Pengamanan tahap pertama adalah sebagai bagian dari aplikasi web yang merupakan antarmuka pengamanan terhadap aplikasi web. Pengamanan kedua adalah pengamanan untuk melindungi cluster computer sebagai sumber daya yang digunakan untuk mengeksekusi aplikasi yang dibuat dengan paradigm pemrograman parallel. Kedua lapisan pengamanan ini dianggap cukup dapat mengamankan aplikasi dan sumber daya dari pengguna atau kode yang tidak diharapkan.Kata kunci: kompilator online, keamanan, kerentanan, serangan, cluster, aplikasi web, pemrograman paralel
Performance Evaluation of NAS Parallel and High-Performance Conjugate Gradient Benchmarks in Mahameru Wirahman, Taufiq; Latifah, Arnida L; Muttaqien, Furqon Hensan; Swardiana, I Wayan Aditya; Arisal, Andria; Iryanto, Syam Budi; Sadikin, Rifki
JOIN (Jurnal Online Informatika) Vol 10 No 2 (2025)
Publisher : Department of Informatics, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/join.v10i2.1557

Abstract

High-Performance Computing (HPC) plays a crucial role in accelerating scientific advancement across numerous fields of research and in effectively implementing various complex scientific applications. Mahameru is one of the largest national HPC systems in Indonesia and has been utilized by many sectors. However, it has not undergone proper benchmarking evaluation, which is vital for identifying issues related to hardware and software configurations and confirming system reliability. Therefore, this study aims to evaluate the performance, efficiency, and capabilities of Mahameru. We present a benchmarking system on Mahameru utilizing two benchmark suites: the NAS Parallel Benchmarks (NPB) and the high-performance conjugate gradient (HPCG) benchmark. Our results indicate that the NPB exhibits a lower speedup in Message Passing Interface (MPI) compared to OpenMP, which can be attributed to the communication overhead and the nature of the computational tasks. Additionally, the HPCG benchmark demonstrates that Mahameru performance can compete with the lower tiers of the Top 500 supercomputers. When operating at full capacity, Mahameru can achieve approximately 2.5% of its theoretical peak performance. While the system generally performs reliably with parallel algorithms, it may not fully leverage hyperthreading with certain algorithms. This benchmark result can serve as a basis for decision-making regarding potential upgrades or changes to a system.
Co-Authors Andria Arisal, Andria Furqon Hensan Muttaqien Latifah, Arnida L Nuryani Nuryani Sadikin, Rifki Swardiana, I Wayan Aditya Syam Budi Iryanto, Syam Budi Wiwin Suwarningsih