2-(4-Bromo­benzene­sulfonamido)acetic acid

The title compound, C8H8BrNO4S, a halogenated sulfon­amide, was prepared by basic hydrolysis of the methyl ester. In the crystal, mol­ecules form centrosymmetric hydrogen-bonded dimers via the carboxyl groups. These dimers are further linked by N—H⋯O inter­actions involving the carbonyl O and amide H atoms, forming a ribbon-like structure propagating in [010]. These ribbons are further linked via C—H⋯O inter­actions, forming a three-dimensional network

Investigation of Cloud Scheduling Algorithms for Resource Utilization Using CloudSim

Compute Cloud comprises a distributed set of High-Performance Computing (HPC) machines to stipulate on-demand computing services to remote users over the internet. Clouds are capable enough to provide an optimal solution to address the ever-increasing computation and storage demands of large scientific HPC applications. To attain good computing performances, mapping of Cloud jobs to the compute resources is a very crucial process. Currently we can say that several efficient Cloud scheduling heuristics are available, however, selecting an appropriate scheduler for the given environment (i.e., jobs and machines heterogeneity) and scheduling objectives (such as minimized makespan, higher throughput, increased resource utilization, load balanced mapping, etc.) is still a difficult task. In this paper, we consider ten important scheduling heuristics (i.e., opportunistic load balancing algorithm, proactive simulation-based scheduling and load balancing, proactive simulation-based scheduling and enhanced load balancing, minimum completion time, Min-Min, load balance improved Min-Min, Max-Min, resource-aware scheduling algorithm, task-aware scheduling algorithm, and Sufferage) to perform an extensive empirical study to insight the scheduling mechanisms and the attainment of the major scheduling objectives. This study assumes that the Cloud job pool consists of a collection of independent and compute-intensive tasks that are statically scheduled to minimize the total execution time of a workload. The experiments are performed using two synthetic and one benchmark GoCJ workloads on a renowned Cloud simulator CloudSim. This empirical study presents a detailed analysis and insights into the circumstances requiring a load balanced scheduling mechanism to improve overall execution performance in terms of makespan, throughput, and resource utilization. The outcomes have revealed that the Sufferage and task-aware scheduling algorithm produce minimum makespan for the Cloud jobs. However, these two scheduling heuristics are not efficient enough to exploit the full computing capabilities of Cloud virtual machines

2-Chloro-4-(2-iodo­benzene­sulfonamido)­benzoic acid

In the title compound, C13H9ClINO4S, the dihedral angle between the aromatic rings is 81.04 (17)°. The disposition of the I and Cl atoms attached to the two rings is anti. In the crystal, mol­ecules are connected via O—H⋯O and N—H⋯O hydrogen bonds

4-Chloro-1-iodo-2-nitro­benzene

In the mol­ecule of the title compound, C6H3ClINO2, the nitro group is disordered over two sites with occupancies of 0.506 (6) and 0.494 (6). The dihedral angles between the benzene ring and the two disordered components of the nitro group are 29.0 (2) and 51.0 (3)°. The disordering avoids short O⋯O inter­molecular contacts in the crystal

N-[2-(Amino­carbon­yl)phen­yl]-4-hydr­oxy-2-methyl-2H-1,2-benzothia­zine-3-carboxamide 1,1-dioxide

In the title compound, C17H15N3O5S, the thia­zine ring adopts a distorted half-chair conformation. The mol­ecular structure is stabilized by intra­molecular N—H⋯O, N—H⋯N and O—H⋯O hydrogen bonding. Pairs of mol­ecules are bound together as centrosymmetric dimers through N—H⋯O hydrogen bonds

3,3,6-Tribromo-1-methyl-1H-2,1-benzo­thia­zin-4(3H)-one 2,2-dioxide

In the title compound, C9H6Br3NO3S, a halogenated benzothia­zine derivative, the thia­zine ring adopts a sofa conformation. The crystal studied was a racemic twin with a contribution of 72 (1)% of the major domain

4-Hydr­oxy-N-(2,4,6-tribromo­phen­yl)-2H-1,2-benzothia­zine-3-carboxamide 1,1-dioxide

In the title compound, C15H19Br3N2O4S, the thia­zine ring adopts a distorted half-chair conformation. The enolic H atom is involved in an intra­molecular O—H⋯O hydrogen bond, forming a six-membered ring. In the crystal, the mol­ecules are linked into a three-dimensional network through inter­molecular N—H⋯O, N—H⋯Br and O—H⋯Br hydrogen bonds

(1E)-1-[4-(Dimethyl­amino)phen­yl]pent-1-en-3-one

The title mol­ecule, C13H17NO, is close to planar: the dihedral angle betweent the dimethyl amino group and the benzene ring is 7.94 (19)°. No significant inter­molecular inter­actions are observed in the crystal structure

Methyl 4-hy­droxy-2-meth­oxy­carbonyl­methyl-1,1-dioxo-1,2-dihydro-1λ6,2-benzothia­zine-3-carboxyl­ate1

There are two independent mol­ecules in the asymmetric unit of the title compound, C13H13NO7S, which have almost identical geometries. The thia­zine ring adopts a sofa conformation in both mol­ecules and the mol­ecular conformations are stabilized by intramolecular O—H⋯O hydrogen bonds. Inter­molecular C—H⋯O hydrogen bonds stabilize the crystal packing

(2R)-2-Benzene­sulfonamido-2-phenyl­ethanoic acid: a new monoclinic polymorph

In the title compound, C14H13NO4S, a sulfonamide derivative of phenyl glycine, the aromatic rings are inclined at a dihedral angle of 28.03 (12)°. In the crystal, O—H⋯O hydrogen bonds link the molecules into chains propagating in [100] and a weak C—H⋯O interaction cross-links the chains in the c-axis direction. In the previously published polymorph, the dihedral angle between the aromatic rings is 45.52 (18)° and the structure is stabilized by three different types of ring motif