Latest blog posts

bson4jackson 2.11.0

July, 25th 2020

I’m de­lighted to an­nounce a new ver­sion of bson4­jack­son 2.11.0. The lib­rary is already very stable and there haven’t been many up­dates re­cently. The latest ver­sion is a main­ten­ance re­lease that up­dates Jack­son and fixes some minor is­sues.

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Steep 5.3.0 has been released

July, 24th 2020

A new minor ver­sion of my work­flow man­age­ment sys­tem Steep is now avail­able. The most not­able changes in ver­sion 5.3.0 are the de­prec­a­tion of the ar­gu­ment type argument in the pro­cess chain model and ser­vice metadata as well as the de­prec­a­tion of parameters of ex­ecute ac­tions in the work­flow model. Both prop­er­ties were mostly un­ne­ces­sary. The ar­gu­ment type argument should be changed to input, and parameters of ex­ecute ac­tions should be merged into their inputs.

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Two new cloud-based data processing papers published

July, 16th 2020

Two of my latest re­search pa­pers about cloud-based data pro­cessing have just been pub­lished. The first pa­per is en­titled “Cap­ab­il­ity-based Schedul­ing of Sci­entific Work­flows in the Cloud” and deals with the schedul­ing al­gorithm I im­ple­men­ted in Steep. I presen­ted this pa­per at the 9th In­ter­na­tional Con­fer­ence on Data Sci­ence, Tech­no­logy and Ap­plic­a­tions (DATA), which was held as a vir­tual con­fer­ence due to COVID-19.

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Steep 5.1.0 has just been released

May, 15th 2020

I’m very happy to an­nounce that Steep 5.1.0 has just been re­leased. This ver­sion in­tro­duces a new web-based user in­ter­face, which looks very mod­ern, is re­spons­ive, and provides many fea­tures that make work with work­flows and pro­cess chains easier. Steep 5.1.0 also adds new HTTP en­d­points and stores in­form­a­tion about cre­ated VMs in the data­base. The ver­sion has been thor­oughly tested in prac­tice over the last couple of months.

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GeoRocket: A scalable and cloud-based data store for big geospatial files

February, 7th 2020

One of the pro­jects I’m work­ing on at Fraunhofer IGD is GeoR­ocket, a high-per­form­ance data store for geo­spa­tial files. It’s my pleas­ure to an­nounce that my re­search pa­per about this ap­plic­a­tion has just been pub­lished in Soft­wareX, an open-ac­cess journal by El­sevier.

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Steep - Run Scientific Workflows in the Cloud

February, 6th 2020

For the last couple of years, I’ve been work­ing on a sci­entific work­flow man­age­ment sys­tem called Steep. I’m more than happy to an­nounce that, here at Fraunhofer IGD, we de­cided to make Steep Open-Source! You can down­load the bin­ar­ies and the source code of Steep from its Git­Hub re­pos­it­ory.

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